Home / 72,820.38-109,229.66-39,751.13

Finding the Fourth Proportional to 72,820.38, 109,229.66 and 39,751.13

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Solution

The fourth proportional to 72,820.38, 109,229.66 and 39,751.13 is: 59,626.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,820.38 : 109,229.66 = 39,751.13 : x
  2. Step 2: Convert to fraction form
    72,820.38/109,229.66 = 39,751.13/x
  3. Step 3: Cross multiply
    72,820.38x = 109,229.66 × 39,751.13
  4. Step 4: Simplify right side
    72,820.38x = 4,342,001,669.61
  5. Step 5: Solve for x
    x = 4,342,001,669.61/72,820.38
  6. Step 6: Final answer
    x = 59,626.19

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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.