Home / 87,281.85-120,449.05-49,556.10

Finding the Fourth Proportional to 87,281.85, 120,449.05 and 49,556.10

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Solution

The fourth proportional to 87,281.85, 120,449.05 and 49,556.10 is: 68,387.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,281.85 : 120,449.05 = 49,556.10 : x
  2. Step 2: Convert to fraction form
    87,281.85/120,449.05 = 49,556.10/x
  3. Step 3: Cross multiply
    87,281.85x = 120,449.05 × 49,556.10
  4. Step 4: Simplify right side
    87,281.85x = 5,968,985,042.81
  5. Step 5: Solve for x
    x = 5,968,985,042.81/87,281.85
  6. Step 6: Final answer
    x = 68,387.47

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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.