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Finding the Fourth Proportional to 71,928, 107,913.36 and 36,892.32

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Solution

The fourth proportional to 71,928, 107,913.36 and 36,892.32 is: 55,349.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,928 : 107,913.36 = 36,892.32 : x
  2. Step 2: Convert to fraction form
    71,928/107,913.36 = 36,892.32/x
  3. Step 3: Cross multiply
    71,928x = 107,913.36 × 36,892.32
  4. Step 4: Simplify right side
    71,928x = 3,981,174,209.40
  5. Step 5: Solve for x
    x = 3,981,174,209.40/71,928
  6. Step 6: Final answer
    x = 55,349.44

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1.5x scale

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.