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Finding the Fourth Proportional to 68,387.76, 94,377.96 and 38,174.76

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Solution

The fourth proportional to 68,387.76, 94,377.96 and 38,174.76 is: 52,682.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,387.76 : 94,377.96 = 38,174.76 : x
  2. Step 2: Convert to fraction form
    68,387.76/94,377.96 = 38,174.76/x
  3. Step 3: Cross multiply
    68,387.76x = 94,377.96 × 38,174.76
  4. Step 4: Simplify right side
    68,387.76x = 3,602,855,972.29
  5. Step 5: Solve for x
    x = 3,602,855,972.29/68,387.76
  6. Step 6: Final answer
    x = 52,682.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.