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Finding the Fourth Proportional to 68,955.72, 95,169.30 and 42,113.88

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Solution

The fourth proportional to 68,955.72, 95,169.30 and 42,113.88 is: 58,123.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,955.72 : 95,169.30 = 42,113.88 : x
  2. Step 2: Convert to fraction form
    68,955.72/95,169.30 = 42,113.88/x
  3. Step 3: Cross multiply
    68,955.72x = 95,169.30 × 42,113.88
  4. Step 4: Simplify right side
    68,955.72x = 4,007,948,479.88
  5. Step 5: Solve for x
    x = 4,007,948,479.88/68,955.72
  6. Step 6: Final answer
    x = 58,123.51

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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.