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Finding the Fourth Proportional to 79,699.38, 109,987.41 and 43,891.92

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Solution

The fourth proportional to 79,699.38, 109,987.41 and 43,891.92 is: 60,572.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,699.38 : 109,987.41 = 43,891.92 : x
  2. Step 2: Convert to fraction form
    79,699.38/109,987.41 = 43,891.92/x
  3. Step 3: Cross multiply
    79,699.38x = 109,987.41 × 43,891.92
  4. Step 4: Simplify right side
    79,699.38x = 4,827,558,600.73
  5. Step 5: Solve for x
    x = 4,827,558,600.73/79,699.38
  6. Step 6: Final answer
    x = 60,572.10

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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.