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Finding the Fourth Proportional to 76,523.77, 114,785.50 and 20,363.88

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Solution

The fourth proportional to 76,523.77, 114,785.50 and 20,363.88 is: 30,545.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,523.77 : 114,785.50 = 20,363.88 : x
  2. Step 2: Convert to fraction form
    76,523.77/114,785.50 = 20,363.88/x
  3. Step 3: Cross multiply
    76,523.77x = 114,785.50 × 20,363.88
  4. Step 4: Simplify right side
    76,523.77x = 2,337,478,147.74
  5. Step 5: Solve for x
    x = 2,337,478,147.74/76,523.77
  6. Step 6: Final answer
    x = 30,545.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.