Home / 72,436.38-108,695.68-39,155.64

Finding the Fourth Proportional to 72,436.38, 108,695.68 and 39,155.64

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Solution

The fourth proportional to 72,436.38, 108,695.68 and 39,155.64 is: 58,755.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,436.38 : 108,695.68 = 39,155.64 : x
  2. Step 2: Convert to fraction form
    72,436.38/108,695.68 = 39,155.64/x
  3. Step 3: Cross multiply
    72,436.38x = 108,695.68 × 39,155.64
  4. Step 4: Simplify right side
    72,436.38x = 4,256,048,915.64
  5. Step 5: Solve for x
    x = 4,256,048,915.64/72,436.38
  6. Step 6: Final answer
    x = 58,755.68

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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.