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Finding the Fourth Proportional to 73,407.69, 101,299.91 and 39,872.97

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Solution

The fourth proportional to 73,407.69, 101,299.91 and 39,872.97 is: 55,023.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,407.69 : 101,299.91 = 39,872.97 : x
  2. Step 2: Convert to fraction form
    73,407.69/101,299.91 = 39,872.97/x
  3. Step 3: Cross multiply
    73,407.69x = 101,299.91 × 39,872.97
  4. Step 4: Simplify right side
    73,407.69x = 4,039,128,073.07
  5. Step 5: Solve for x
    x = 4,039,128,073.07/73,407.69
  6. Step 6: Final answer
    x = 55,023.23

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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.