Home / 87,879.08-121,272.45-47,591.90

Finding the Fourth Proportional to 87,879.08, 121,272.45 and 47,591.90

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Solution

The fourth proportional to 87,879.08, 121,272.45 and 47,591.90 is: 65,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,879.08 : 121,272.45 = 47,591.90 : x
  2. Step 2: Convert to fraction form
    87,879.08/121,272.45 = 47,591.90/x
  3. Step 3: Cross multiply
    87,879.08x = 121,272.45 × 47,591.90
  4. Step 4: Simplify right side
    87,879.08x = 5,771,585,706.79
  5. Step 5: Solve for x
    x = 5,771,585,706.79/87,879.08
  6. Step 6: Final answer
    x = 65,676.45

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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.