Home / 63,120.91-87,138.42-39,255.27

Finding the Fourth Proportional to 63,120.91, 87,138.42 and 39,255.27

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Solution

The fourth proportional to 63,120.91, 87,138.42 and 39,255.27 is: 54,191.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,120.91 : 87,138.42 = 39,255.27 : x
  2. Step 2: Convert to fraction form
    63,120.91/87,138.42 = 39,255.27/x
  3. Step 3: Cross multiply
    63,120.91x = 87,138.42 × 39,255.27
  4. Step 4: Simplify right side
    63,120.91x = 3,420,642,591.60
  5. Step 5: Solve for x
    x = 3,420,642,591.60/63,120.91
  6. Step 6: Final answer
    x = 54,191.91

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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.