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Finding the Fourth Proportional to 68,903.92, 95,086.20 and 38,689.48

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Solution

The fourth proportional to 68,903.92, 95,086.20 and 38,689.48 is: 53,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,903.92 : 95,086.20 = 38,689.48 : x
  2. Step 2: Convert to fraction form
    68,903.92/95,086.20 = 38,689.48/x
  3. Step 3: Cross multiply
    68,903.92x = 95,086.20 × 38,689.48
  4. Step 4: Simplify right side
    68,903.92x = 3,678,835,633.18
  5. Step 5: Solve for x
    x = 3,678,835,633.18/68,903.92
  6. Step 6: Final answer
    x = 53,390.80

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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.