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Finding the Fourth Proportional to 68,990.80, 95,206.17 and 38,362.68

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Solution

The fourth proportional to 68,990.80, 95,206.17 and 38,362.68 is: 52,939.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,990.80 : 95,206.17 = 38,362.68 : x
  2. Step 2: Convert to fraction form
    68,990.80/95,206.17 = 38,362.68/x
  3. Step 3: Cross multiply
    68,990.80x = 95,206.17 × 38,362.68
  4. Step 4: Simplify right side
    68,990.80x = 3,652,363,357.70
  5. Step 5: Solve for x
    x = 3,652,363,357.70/68,990.80
  6. Step 6: Final answer
    x = 52,939.86

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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.