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Finding the Fourth Proportional to 87,809.92, 131,549.76 and 43,384.96

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Solution

The fourth proportional to 87,809.92, 131,549.76 and 43,384.96 is: 64,995.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,809.92 : 131,549.76 = 43,384.96 : x
  2. Step 2: Convert to fraction form
    87,809.92/131,549.76 = 43,384.96/x
  3. Step 3: Cross multiply
    87,809.92x = 131,549.76 × 43,384.96
  4. Step 4: Simplify right side
    87,809.92x = 5,707,281,075.61
  5. Step 5: Solve for x
    x = 5,707,281,075.61/87,809.92
  6. Step 6: Final answer
    x = 64,995.86

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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.