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Finding the Fourth Proportional to 82,951.88, 124,428.27 and 20,622.38

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Solution

The fourth proportional to 82,951.88, 124,428.27 and 20,622.38 is: 30,933.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,951.88 : 124,428.27 = 20,622.38 : x
  2. Step 2: Convert to fraction form
    82,951.88/124,428.27 = 20,622.38/x
  3. Step 3: Cross multiply
    82,951.88x = 124,428.27 × 20,622.38
  4. Step 4: Simplify right side
    82,951.88x = 2,566,006,405.87
  5. Step 5: Solve for x
    x = 2,566,006,405.87/82,951.88
  6. Step 6: Final answer
    x = 30,933.68

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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.