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Finding the Fourth Proportional to 68,156.52, 94,069.98 and 39,869.16

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Solution

The fourth proportional to 68,156.52, 94,069.98 and 39,869.16 is: 55,027.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,156.52 : 94,069.98 = 39,869.16 : x
  2. Step 2: Convert to fraction form
    68,156.52/94,069.98 = 39,869.16/x
  3. Step 3: Cross multiply
    68,156.52x = 94,069.98 × 39,869.16
  4. Step 4: Simplify right side
    68,156.52x = 3,750,491,083.82
  5. Step 5: Solve for x
    x = 3,750,491,083.82/68,156.52
  6. Step 6: Final answer
    x = 55,027.62

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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.