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Finding the Fourth Proportional to 71,937.82, 99,287.16 and 45,103.60

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Solution

The fourth proportional to 71,937.82, 99,287.16 and 45,103.60 is: 62,251.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,937.82 : 99,287.16 = 45,103.60 : x
  2. Step 2: Convert to fraction form
    71,937.82/99,287.16 = 45,103.60/x
  3. Step 3: Cross multiply
    71,937.82x = 99,287.16 × 45,103.60
  4. Step 4: Simplify right side
    71,937.82x = 4,478,208,349.78
  5. Step 5: Solve for x
    x = 4,478,208,349.78/71,937.82
  6. Step 6: Final answer
    x = 62,251.10

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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.