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Finding the Fourth Proportional to 68,567.52, 102,862.80 and 21,834.72

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Solution

The fourth proportional to 68,567.52, 102,862.80 and 21,834.72 is: 32,755.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,567.52 : 102,862.80 = 21,834.72 : x
  2. Step 2: Convert to fraction form
    68,567.52/102,862.80 = 21,834.72/x
  3. Step 3: Cross multiply
    68,567.52x = 102,862.80 × 21,834.72
  4. Step 4: Simplify right side
    68,567.52x = 2,245,980,436.42
  5. Step 5: Solve for x
    x = 2,245,980,436.42/68,567.52
  6. Step 6: Final answer
    x = 32,755.75

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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.