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Finding the Fourth Proportional to 71,809.62, 99,082.80 and 43,498.86

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Solution

The fourth proportional to 71,809.62, 99,082.80 and 43,498.86 is: 60,019.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,809.62 : 99,082.80 = 43,498.86 : x
  2. Step 2: Convert to fraction form
    71,809.62/99,082.80 = 43,498.86/x
  3. Step 3: Cross multiply
    71,809.62x = 99,082.80 × 43,498.86
  4. Step 4: Simplify right side
    71,809.62x = 4,309,988,845.61
  5. Step 5: Solve for x
    x = 4,309,988,845.61/71,809.62
  6. Step 6: Final answer
    x = 60,019.66

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1.5x scale

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.