Home / 87,458.20-120,749.34-67,277.86

Finding the Fourth Proportional to 87,458.20, 120,749.34 and 67,277.86

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Solution

The fourth proportional to 87,458.20, 120,749.34 and 67,277.86 is: 92,887.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,458.20 : 120,749.34 = 67,277.86 : x
  2. Step 2: Convert to fraction form
    87,458.20/120,749.34 = 67,277.86/x
  3. Step 3: Cross multiply
    87,458.20x = 120,749.34 × 67,277.86
  4. Step 4: Simplify right side
    87,458.20x = 8,123,757,191.61
  5. Step 5: Solve for x
    x = 8,123,757,191.61/87,458.20
  6. Step 6: Final answer
    x = 92,887.31

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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.