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Finding the Fourth Proportional to 73,892.40, 101,972.12 and 42,063.36

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Solution

The fourth proportional to 73,892.40, 101,972.12 and 42,063.36 is: 58,047.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,892.40 : 101,972.12 = 42,063.36 : x
  2. Step 2: Convert to fraction form
    73,892.40/101,972.12 = 42,063.36/x
  3. Step 3: Cross multiply
    73,892.40x = 101,972.12 × 42,063.36
  4. Step 4: Simplify right side
    73,892.40x = 4,289,289,993.52
  5. Step 5: Solve for x
    x = 4,289,289,993.52/73,892.40
  6. Step 6: Final answer
    x = 58,047.78

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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.