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Finding the Fourth Proportional to 66,955.91, 100,395.79 and 51,753.11

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Solution

The fourth proportional to 66,955.91, 100,395.79 and 51,753.11 is: 77,600.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,955.91 : 100,395.79 = 51,753.11 : x
  2. Step 2: Convert to fraction form
    66,955.91/100,395.79 = 51,753.11/x
  3. Step 3: Cross multiply
    66,955.91x = 100,395.79 × 51,753.11
  4. Step 4: Simplify right side
    66,955.91x = 5,195,793,732.05
  5. Step 5: Solve for x
    x = 5,195,793,732.05/66,955.91
  6. Step 6: Final answer
    x = 77,600.23

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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.