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Finding the Fourth Proportional to 68,248.98, 94,186.80 and 39,963.78

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Solution

The fourth proportional to 68,248.98, 94,186.80 and 39,963.78 is: 55,151.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,248.98 : 94,186.80 = 39,963.78 : x
  2. Step 2: Convert to fraction form
    68,248.98/94,186.80 = 39,963.78/x
  3. Step 3: Cross multiply
    68,248.98x = 94,186.80 × 39,963.78
  4. Step 4: Simplify right side
    68,248.98x = 3,764,060,554.10
  5. Step 5: Solve for x
    x = 3,764,060,554.10/68,248.98
  6. Step 6: Final answer
    x = 55,151.89

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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.