Home / 87,771.92-121,126.12-47,486.55

Finding the Fourth Proportional to 87,771.92, 121,126.12 and 47,486.55

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Solution

The fourth proportional to 87,771.92, 121,126.12 and 47,486.55 is: 65,531.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,771.92 : 121,126.12 = 47,486.55 : x
  2. Step 2: Convert to fraction form
    87,771.92/121,126.12 = 47,486.55/x
  3. Step 3: Cross multiply
    87,771.92x = 121,126.12 × 47,486.55
  4. Step 4: Simplify right side
    87,771.92x = 5,751,861,066.77
  5. Step 5: Solve for x
    x = 5,751,861,066.77/87,771.92
  6. Step 6: Final answer
    x = 65,531.91

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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.