Home / 78,306.85-108,063.52-42,496.86

Finding the Fourth Proportional to 78,306.85, 108,063.52 and 42,496.86

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Solution

The fourth proportional to 78,306.85, 108,063.52 and 42,496.86 is: 58,645.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,306.85 : 108,063.52 = 42,496.86 : x
  2. Step 2: Convert to fraction form
    78,306.85/108,063.52 = 42,496.86/x
  3. Step 3: Cross multiply
    78,306.85x = 108,063.52 × 42,496.86
  4. Step 4: Simplify right side
    78,306.85x = 4,592,360,280.55
  5. Step 5: Solve for x
    x = 4,592,360,280.55/78,306.85
  6. Step 6: Final answer
    x = 58,645.70

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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.