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Finding the Fourth Proportional to 67,126.62, 100,707.02 and 19,743.40

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Solution

The fourth proportional to 67,126.62, 100,707.02 and 19,743.40 is: 29,620.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,126.62 : 100,707.02 = 19,743.40 : x
  2. Step 2: Convert to fraction form
    67,126.62/100,707.02 = 19,743.40/x
  3. Step 3: Cross multiply
    67,126.62x = 100,707.02 × 19,743.40
  4. Step 4: Simplify right side
    67,126.62x = 1,988,298,978.67
  5. Step 5: Solve for x
    x = 1,988,298,978.67/67,126.62
  6. Step 6: Final answer
    x = 29,620.13

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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.