Home / 72,764,101.80-108,986,720.40-38,645,589.60

Finding the Fourth Proportional to 72,764,101.80, 108,986,720.40 and 38,645,589.60

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Solution

The fourth proportional to 72,764,101.80, 108,986,720.40 and 38,645,589.60 is: 57,883,708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,764,101.80 : 108,986,720.40 = 38,645,589.60 : x
  2. Step 2: Convert to fraction form
    72,764,101.80/108,986,720.40 = 38,645,589.60/x
  3. Step 3: Cross multiply
    72,764,101.80x = 108,986,720.40 × 38,645,589.60
  4. Step 4: Simplify right side
    72,764,101.80x = 4,211,856,068,428,348
  5. Step 5: Solve for x
    x = 4,211,856,068,428,348/72,764,101.80
  6. Step 6: Final answer
    x = 57,883,708.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.