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Finding the Fourth Proportional to 73,449, 101,359.62 and 39,915

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Solution

The fourth proportional to 73,449, 101,359.62 and 39,915 is: 55,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,449 : 101,359.62 = 39,915 : x
  2. Step 2: Convert to fraction form
    73,449/101,359.62 = 39,915/x
  3. Step 3: Cross multiply
    73,449x = 101,359.62 × 39,915
  4. Step 4: Simplify right side
    73,449x = 4,045,769,232.30
  5. Step 5: Solve for x
    x = 4,045,769,232.30/73,449
  6. Step 6: Final answer
    x = 55,082.70

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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.