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Finding the Fourth Proportional to 79,774.92, 119,553.03 and 77,380.16

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Solution

The fourth proportional to 79,774.92, 119,553.03 and 77,380.16 is: 115,964.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,774.92 : 119,553.03 = 77,380.16 : x
  2. Step 2: Convert to fraction form
    79,774.92/119,553.03 = 77,380.16/x
  3. Step 3: Cross multiply
    79,774.92x = 119,553.03 × 77,380.16
  4. Step 4: Simplify right side
    79,774.92x = 9,251,031,992.12
  5. Step 5: Solve for x
    x = 9,251,031,992.12/79,774.92
  6. Step 6: Final answer
    x = 115,964.17

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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.