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Finding the Fourth Proportional to 68,858.49, 95,024.34 and 38,643.78

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Solution

The fourth proportional to 68,858.49, 95,024.34 and 38,643.78 is: 53,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,858.49 : 95,024.34 = 38,643.78 : x
  2. Step 2: Convert to fraction form
    68,858.49/95,024.34 = 38,643.78/x
  3. Step 3: Cross multiply
    68,858.49x = 95,024.34 × 38,643.78
  4. Step 4: Simplify right side
    68,858.49x = 3,672,099,689.61
  5. Step 5: Solve for x
    x = 3,672,099,689.61/68,858.49
  6. Step 6: Final answer
    x = 53,328.21

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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.