Home / 87,631.92-131,526-40,911.12

Finding the Fourth Proportional to 87,631.92, 131,526 and 40,911.12

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Solution

The fourth proportional to 87,631.92, 131,526 and 40,911.12 is: 61,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,631.92 : 131,526 = 40,911.12 : x
  2. Step 2: Convert to fraction form
    87,631.92/131,526 = 40,911.12/x
  3. Step 3: Cross multiply
    87,631.92x = 131,526 × 40,911.12
  4. Step 4: Simplify right side
    87,631.92x = 5,380,875,969.12
  5. Step 5: Solve for x
    x = 5,380,875,969.12/87,631.92
  6. Step 6: Final answer
    x = 61,403.15

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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.