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Finding the Fourth Proportional to 68,605.92, 94,675.50 and 38,391.30

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Solution

The fourth proportional to 68,605.92, 94,675.50 and 38,391.30 is: 52,979.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,605.92 : 94,675.50 = 38,391.30 : x
  2. Step 2: Convert to fraction form
    68,605.92/94,675.50 = 38,391.30/x
  3. Step 3: Cross multiply
    68,605.92x = 94,675.50 × 38,391.30
  4. Step 4: Simplify right side
    68,605.92x = 3,634,715,523.15
  5. Step 5: Solve for x
    x = 3,634,715,523.15/68,605.92
  6. Step 6: Final answer
    x = 52,979.62

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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.