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Finding the Fourth Proportional to 67,658.13, 101,489.63 and 20,273.76

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Solution

The fourth proportional to 67,658.13, 101,489.63 and 20,273.76 is: 30,411.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,658.13 : 101,489.63 = 20,273.76 : x
  2. Step 2: Convert to fraction form
    67,658.13/101,489.63 = 20,273.76/x
  3. Step 3: Cross multiply
    67,658.13x = 101,489.63 × 20,273.76
  4. Step 4: Simplify right side
    67,658.13x = 2,057,576,299.74
  5. Step 5: Solve for x
    x = 2,057,576,299.74/67,658.13
  6. Step 6: Final answer
    x = 30,411.37

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1.5x scale

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.