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Finding the Fourth Proportional to 79,560.68, 109,789.98 and 43,752.20

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Solution

The fourth proportional to 79,560.68, 109,789.98 and 43,752.20 is: 60,375.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,560.68 : 109,789.98 = 43,752.20 : x
  2. Step 2: Convert to fraction form
    79,560.68/109,789.98 = 43,752.20/x
  3. Step 3: Cross multiply
    79,560.68x = 109,789.98 × 43,752.20
  4. Step 4: Simplify right side
    79,560.68x = 4,803,553,162.96
  5. Step 5: Solve for x
    x = 4,803,553,162.96/79,560.68
  6. Step 6: Final answer
    x = 60,375.97

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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.