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Finding the Fourth Proportional to 69,123.92, 103,685.81 and 21,743.17

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Solution

The fourth proportional to 69,123.92, 103,685.81 and 21,743.17 is: 32,614.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,123.92 : 103,685.81 = 21,743.17 : x
  2. Step 2: Convert to fraction form
    69,123.92/103,685.81 = 21,743.17/x
  3. Step 3: Cross multiply
    69,123.92x = 103,685.81 × 21,743.17
  4. Step 4: Simplify right side
    69,123.92x = 2,254,457,825.49
  5. Step 5: Solve for x
    x = 2,254,457,825.49/69,123.92
  6. Step 6: Final answer
    x = 32,614.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.