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Finding the Fourth Proportional to 87,697.86, 131,487.89 and 45,029.16

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Solution

The fourth proportional to 87,697.86, 131,487.89 and 45,029.16 is: 67,513.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,697.86 : 131,487.89 = 45,029.16 : x
  2. Step 2: Convert to fraction form
    87,697.86/131,487.89 = 45,029.16/x
  3. Step 3: Cross multiply
    87,697.86x = 131,487.89 × 45,029.16
  4. Step 4: Simplify right side
    87,697.86x = 5,920,789,011.73
  5. Step 5: Solve for x
    x = 5,920,789,011.73/87,697.86
  6. Step 6: Final answer
    x = 67,513.49

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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.