Home / 87,081.43-120,197.91-56,871.31

Finding the Fourth Proportional to 87,081.43, 120,197.91 and 56,871.31

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Solution

The fourth proportional to 87,081.43, 120,197.91 and 56,871.31 is: 78,499.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,081.43 : 120,197.91 = 56,871.31 : x
  2. Step 2: Convert to fraction form
    87,081.43/120,197.91 = 56,871.31/x
  3. Step 3: Cross multiply
    87,081.43x = 120,197.91 × 56,871.31
  4. Step 4: Simplify right side
    87,081.43x = 6,835,812,316.61
  5. Step 5: Solve for x
    x = 6,835,812,316.61/87,081.43
  6. Step 6: Final answer
    x = 78,499.09

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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.