Home / 87,613.50-120,906.64-47,869.50

Finding the Fourth Proportional to 87,613.50, 120,906.64 and 47,869.50

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Solution

The fourth proportional to 87,613.50, 120,906.64 and 47,869.50 is: 66,059.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,613.50 : 120,906.64 = 47,869.50 : x
  2. Step 2: Convert to fraction form
    87,613.50/120,906.64 = 47,869.50/x
  3. Step 3: Cross multiply
    87,613.50x = 120,906.64 × 47,869.50
  4. Step 4: Simplify right side
    87,613.50x = 5,787,740,403.48
  5. Step 5: Solve for x
    x = 5,787,740,403.48/87,613.50
  6. Step 6: Final answer
    x = 66,059.92

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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.