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Finding the Fourth Proportional to 87,082.92, 120,199.98 and 56,872.80

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Solution

The fourth proportional to 87,082.92, 120,199.98 and 56,872.80 is: 78,501.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,082.92 : 120,199.98 = 56,872.80 : x
  2. Step 2: Convert to fraction form
    87,082.92/120,199.98 = 56,872.80/x
  3. Step 3: Cross multiply
    87,082.92x = 120,199.98 × 56,872.80
  4. Step 4: Simplify right side
    87,082.92x = 6,836,109,422.54
  5. Step 5: Solve for x
    x = 6,836,109,422.54/87,082.92
  6. Step 6: Final answer
    x = 78,501.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.