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Finding the Fourth Proportional to 66,990.91, 100,332.33 and 37,343.09

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Solution

The fourth proportional to 66,990.91, 100,332.33 and 37,343.09 is: 55,928.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,990.91 : 100,332.33 = 37,343.09 : x
  2. Step 2: Convert to fraction form
    66,990.91/100,332.33 = 37,343.09/x
  3. Step 3: Cross multiply
    66,990.91x = 100,332.33 × 37,343.09
  4. Step 4: Simplify right side
    66,990.91x = 3,746,719,229.10
  5. Step 5: Solve for x
    x = 3,746,719,229.10/66,990.91
  6. Step 6: Final answer
    x = 55,928.77

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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.