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Finding the Fourth Proportional to 67,373.24, 101,045.73 and 19,988.78

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Solution

The fourth proportional to 67,373.24, 101,045.73 and 19,988.78 is: 29,978.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,373.24 : 101,045.73 = 19,988.78 : x
  2. Step 2: Convert to fraction form
    67,373.24/101,045.73 = 19,988.78/x
  3. Step 3: Cross multiply
    67,373.24x = 101,045.73 × 19,988.78
  4. Step 4: Simplify right side
    67,373.24x = 2,019,780,361.68
  5. Step 5: Solve for x
    x = 2,019,780,361.68/67,373.24
  6. Step 6: Final answer
    x = 29,978.97

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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.