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Finding the Fourth Proportional to 66,660.39, 99,990.65 and 26,697.38

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Solution

The fourth proportional to 66,660.39, 99,990.65 and 26,697.38 is: 40,046.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,660.39 : 99,990.65 = 26,697.38 : x
  2. Step 2: Convert to fraction form
    66,660.39/99,990.65 = 26,697.38/x
  3. Step 3: Cross multiply
    66,660.39x = 99,990.65 × 26,697.38
  4. Step 4: Simplify right side
    66,660.39x = 2,669,487,946.29
  5. Step 5: Solve for x
    x = 2,669,487,946.29/66,660.39
  6. Step 6: Final answer
    x = 40,046.09

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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.