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Finding the Fourth Proportional to 68,972.76, 103,255.02 and 42,592.68

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Solution

The fourth proportional to 68,972.76, 103,255.02 and 42,592.68 is: 63,762.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,972.76 : 103,255.02 = 42,592.68 : x
  2. Step 2: Convert to fraction form
    68,972.76/103,255.02 = 42,592.68/x
  3. Step 3: Cross multiply
    68,972.76x = 103,255.02 × 42,592.68
  4. Step 4: Simplify right side
    68,972.76x = 4,397,908,025.25
  5. Step 5: Solve for x
    x = 4,397,908,025.25/68,972.76
  6. Step 6: Final answer
    x = 63,762.97

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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.