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Finding the Fourth Proportional to 68,751.32, 94,872.12 and 38,531.48

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Solution

The fourth proportional to 68,751.32, 94,872.12 and 38,531.48 is: 53,170.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,751.32 : 94,872.12 = 38,531.48 : x
  2. Step 2: Convert to fraction form
    68,751.32/94,872.12 = 38,531.48/x
  3. Step 3: Cross multiply
    68,751.32x = 94,872.12 × 38,531.48
  4. Step 4: Simplify right side
    68,751.32x = 3,655,563,194.34
  5. Step 5: Solve for x
    x = 3,655,563,194.34/68,751.32
  6. Step 6: Final answer
    x = 53,170.81

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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.