Home / 87,280.50-120,447.90-49,555.56

Finding the Fourth Proportional to 87,280.50, 120,447.90 and 49,555.56

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Solution

The fourth proportional to 87,280.50, 120,447.90 and 49,555.56 is: 68,387.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,280.50 : 120,447.90 = 49,555.56 : x
  2. Step 2: Convert to fraction form
    87,280.50/120,447.90 = 49,555.56/x
  3. Step 3: Cross multiply
    87,280.50x = 120,447.90 × 49,555.56
  4. Step 4: Simplify right side
    87,280.50x = 5,968,863,135.32
  5. Step 5: Solve for x
    x = 5,968,863,135.32/87,280.50
  6. Step 6: Final answer
    x = 68,387.13

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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.