Home / 78,472.43-108,294.09-42,664.85

Finding the Fourth Proportional to 78,472.43, 108,294.09 and 42,664.85

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Solution

The fourth proportional to 78,472.43, 108,294.09 and 42,664.85 is: 58,878.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,472.43 : 108,294.09 = 42,664.85 : x
  2. Step 2: Convert to fraction form
    78,472.43/108,294.09 = 42,664.85/x
  3. Step 3: Cross multiply
    78,472.43x = 108,294.09 × 42,664.85
  4. Step 4: Simplify right side
    78,472.43x = 4,620,351,105.74
  5. Step 5: Solve for x
    x = 4,620,351,105.74/78,472.43
  6. Step 6: Final answer
    x = 58,878.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.