Home / 87,179.79-120,277.17-56,982.55

Finding the Fourth Proportional to 87,179.79, 120,277.17 and 56,982.55

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Solution

The fourth proportional to 87,179.79, 120,277.17 and 56,982.55 is: 78,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,179.79 : 120,277.17 = 56,982.55 : x
  2. Step 2: Convert to fraction form
    87,179.79/120,277.17 = 56,982.55/x
  3. Step 3: Cross multiply
    87,179.79x = 120,277.17 × 56,982.55
  4. Step 4: Simplify right side
    87,179.79x = 6,853,699,853.38
  5. Step 5: Solve for x
    x = 6,853,699,853.38/87,179.79
  6. Step 6: Final answer
    x = 78,615.70

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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.