Home / 87,108.48-120,213.12-49,390.08

Finding the Fourth Proportional to 87,108.48, 120,213.12 and 49,390.08

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Solution

The fourth proportional to 87,108.48, 120,213.12 and 49,390.08 is: 68,160.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,108.48 : 120,213.12 = 49,390.08 : x
  2. Step 2: Convert to fraction form
    87,108.48/120,213.12 = 49,390.08/x
  3. Step 3: Cross multiply
    87,108.48x = 120,213.12 × 49,390.08
  4. Step 4: Simplify right side
    87,108.48x = 5,937,335,613.85
  5. Step 5: Solve for x
    x = 5,937,335,613.85/87,108.48
  6. Step 6: Final answer
    x = 68,160.25

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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.