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Finding the Fourth Proportional to 71,961.32, 99,301.93 and 39,694.01

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Solution

The fourth proportional to 71,961.32, 99,301.93 and 39,694.01 is: 54,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,961.32 : 99,301.93 = 39,694.01 : x
  2. Step 2: Convert to fraction form
    71,961.32/99,301.93 = 39,694.01/x
  3. Step 3: Cross multiply
    71,961.32x = 99,301.93 × 39,694.01
  4. Step 4: Simplify right side
    71,961.32x = 3,941,691,206.69
  5. Step 5: Solve for x
    x = 3,941,691,206.69/71,961.32
  6. Step 6: Final answer
    x = 54,775.14

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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.