Home / 87,127.68-120,239.04-49,403.52

Finding the Fourth Proportional to 87,127.68, 120,239.04 and 49,403.52

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Solution

The fourth proportional to 87,127.68, 120,239.04 and 49,403.52 is: 68,178.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,127.68 : 120,239.04 = 49,403.52 : x
  2. Step 2: Convert to fraction form
    87,127.68/120,239.04 = 49,403.52/x
  3. Step 3: Cross multiply
    87,127.68x = 120,239.04 × 49,403.52
  4. Step 4: Simplify right side
    87,127.68x = 5,940,231,817.42
  5. Step 5: Solve for x
    x = 5,940,231,817.42/87,127.68
  6. Step 6: Final answer
    x = 68,178.47

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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.