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Finding the Fourth Proportional to 66,259, 99,420.39 and 32,981.97

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Solution

The fourth proportional to 66,259, 99,420.39 and 32,981.97 is: 49,488.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,259 : 99,420.39 = 32,981.97 : x
  2. Step 2: Convert to fraction form
    66,259/99,420.39 = 32,981.97/x
  3. Step 3: Cross multiply
    66,259x = 99,420.39 × 32,981.97
  4. Step 4: Simplify right side
    66,259x = 3,279,080,320.37
  5. Step 5: Solve for x
    x = 3,279,080,320.37/66,259
  6. Step 6: Final answer
    x = 49,488.83

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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.