Home / 87,861.57-131,791.19-21,302.30

Finding the Fourth Proportional to 87,861.57, 131,791.19 and 21,302.30

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Solution

The fourth proportional to 87,861.57, 131,791.19 and 21,302.30 is: 31,953.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,861.57 : 131,791.19 = 21,302.30 : x
  2. Step 2: Convert to fraction form
    87,861.57/131,791.19 = 21,302.30/x
  3. Step 3: Cross multiply
    87,861.57x = 131,791.19 × 21,302.30
  4. Step 4: Simplify right side
    87,861.57x = 2,807,454,701.27
  5. Step 5: Solve for x
    x = 2,807,454,701.27/87,861.57
  6. Step 6: Final answer
    x = 31,953.16

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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.