Home / 87,934.12-121,348.66-47,647.86

Finding the Fourth Proportional to 87,934.12, 121,348.66 and 47,647.86

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Solution

The fourth proportional to 87,934.12, 121,348.66 and 47,647.86 is: 65,753.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,934.12 : 121,348.66 = 47,647.86 : x
  2. Step 2: Convert to fraction form
    87,934.12/121,348.66 = 47,647.86/x
  3. Step 3: Cross multiply
    87,934.12x = 121,348.66 × 47,647.86
  4. Step 4: Simplify right side
    87,934.12x = 5,782,003,117.89
  5. Step 5: Solve for x
    x = 5,782,003,117.89/87,934.12
  6. Step 6: Final answer
    x = 65,753.81

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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.