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Finding the Fourth Proportional to 72,529.50, 108,961.02 and 51,520.62

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Solution

The fourth proportional to 72,529.50, 108,961.02 and 51,520.62 is: 77,399.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,529.50 : 108,961.02 = 51,520.62 : x
  2. Step 2: Convert to fraction form
    72,529.50/108,961.02 = 51,520.62/x
  3. Step 3: Cross multiply
    72,529.50x = 108,961.02 × 51,520.62
  4. Step 4: Simplify right side
    72,529.50x = 5,613,739,306.23
  5. Step 5: Solve for x
    x = 5,613,739,306.23/72,529.50
  6. Step 6: Final answer
    x = 77,399.39

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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.