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Finding the Fourth Proportional to 87,299.75, 120,473.66 and 49,574

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Solution

The fourth proportional to 87,299.75, 120,473.66 and 49,574 is: 68,412.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,299.75 : 120,473.66 = 49,574 : x
  2. Step 2: Convert to fraction form
    87,299.75/120,473.66 = 49,574/x
  3. Step 3: Cross multiply
    87,299.75x = 120,473.66 × 49,574
  4. Step 4: Simplify right side
    87,299.75x = 5,972,361,220.84
  5. Step 5: Solve for x
    x = 5,972,361,220.84/87,299.75
  6. Step 6: Final answer
    x = 68,412.12

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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.