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Finding the Fourth Proportional to 68,008.68, 102,032.86 and 28,545

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Solution

The fourth proportional to 68,008.68, 102,032.86 and 28,545 is: 42,825.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,008.68 : 102,032.86 = 28,545 : x
  2. Step 2: Convert to fraction form
    68,008.68/102,032.86 = 28,545/x
  3. Step 3: Cross multiply
    68,008.68x = 102,032.86 × 28,545
  4. Step 4: Simplify right side
    68,008.68x = 2,912,527,988.70
  5. Step 5: Solve for x
    x = 2,912,527,988.70/68,008.68
  6. Step 6: Final answer
    x = 42,825.83

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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.