var array = [2.74, 48.39, 71.45, 85, 38.39];

var sum: number = 0;
//console.log(array.length);
for (var i = 0; i < array.length; i++) {
  console.log(array[i]);
  sum += array[i];
}
console.log(sum);

this.array.map(c => parseFloat(c)).reduce((a, b) => a + b, 0);