Home / 87,685.17-120,976.99-53,658.15

Finding the Fourth Proportional to 87,685.17, 120,976.99 and 53,658.15

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Solution

The fourth proportional to 87,685.17, 120,976.99 and 53,658.15 is: 74,030.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,685.17 : 120,976.99 = 53,658.15 : x
  2. Step 2: Convert to fraction form
    87,685.17/120,976.99 = 53,658.15/x
  3. Step 3: Cross multiply
    87,685.17x = 120,976.99 × 53,658.15
  4. Step 4: Simplify right side
    87,685.17x = 6,491,401,341.82
  5. Step 5: Solve for x
    x = 6,491,401,341.82/87,685.17
  6. Step 6: Final answer
    x = 74,030.78

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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.