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Finding the Fourth Proportional to 79,952, 110,231.20 and 65,558.80

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Solution

The fourth proportional to 79,952, 110,231.20 and 65,558.80 is: 90,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,952 : 110,231.20 = 65,558.80 : x
  2. Step 2: Convert to fraction form
    79,952/110,231.20 = 65,558.80/x
  3. Step 3: Cross multiply
    79,952x = 110,231.20 × 65,558.80
  4. Step 4: Simplify right side
    79,952x = 7,226,625,194.56
  5. Step 5: Solve for x
    x = 7,226,625,194.56/79,952
  6. Step 6: Final answer
    x = 90,387.05

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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.