Home / 87,809.40-131,562.90-40,966.20

Finding the Fourth Proportional to 87,809.40, 131,562.90 and 40,966.20

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Solution

The fourth proportional to 87,809.40, 131,562.90 and 40,966.20 is: 61,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,809.40 : 131,562.90 = 40,966.20 : x
  2. Step 2: Convert to fraction form
    87,809.40/131,562.90 = 40,966.20/x
  3. Step 3: Cross multiply
    87,809.40x = 131,562.90 × 40,966.20
  4. Step 4: Simplify right side
    87,809.40x = 5,389,632,073.98
  5. Step 5: Solve for x
    x = 5,389,632,073.98/87,809.40
  6. Step 6: Final answer
    x = 61,378.76

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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.