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Finding the Fourth Proportional to 68,414.52, 102,624.66 and 21,666.36

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Solution

The fourth proportional to 68,414.52, 102,624.66 and 21,666.36 is: 32,500.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,414.52 : 102,624.66 = 21,666.36 : x
  2. Step 2: Convert to fraction form
    68,414.52/102,624.66 = 21,666.36/x
  3. Step 3: Cross multiply
    68,414.52x = 102,624.66 × 21,666.36
  4. Step 4: Simplify right side
    68,414.52x = 2,223,502,828.44
  5. Step 5: Solve for x
    x = 2,223,502,828.44/68,414.52
  6. Step 6: Final answer
    x = 32,500.45

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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.