Home / 87,521.31-120,781.87-53,529.19

Finding the Fourth Proportional to 87,521.31, 120,781.87 and 53,529.19

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Solution

The fourth proportional to 87,521.31, 120,781.87 and 53,529.19 is: 73,871.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,521.31 : 120,781.87 = 53,529.19 : x
  2. Step 2: Convert to fraction form
    87,521.31/120,781.87 = 53,529.19/x
  3. Step 3: Cross multiply
    87,521.31x = 120,781.87 × 53,529.19
  4. Step 4: Simplify right side
    87,521.31x = 6,465,355,232.01
  5. Step 5: Solve for x
    x = 6,465,355,232.01/87,521.31
  6. Step 6: Final answer
    x = 73,871.78

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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.