Home / 87,821.20-131,473-54,433.81

Finding the Fourth Proportional to 87,821.20, 131,473 and 54,433.81

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Solution

The fourth proportional to 87,821.20, 131,473 and 54,433.81 is: 81,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,821.20 : 131,473 = 54,433.81 : x
  2. Step 2: Convert to fraction form
    87,821.20/131,473 = 54,433.81/x
  3. Step 3: Cross multiply
    87,821.20x = 131,473 × 54,433.81
  4. Step 4: Simplify right side
    87,821.20x = 7,156,576,302.13
  5. Step 5: Solve for x
    x = 7,156,576,302.13/87,821.20
  6. Step 6: Final answer
    x = 81,490.30

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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.