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Finding the Fourth Proportional to 87,050, 120,143.58 and 49,346.12

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Solution

The fourth proportional to 87,050, 120,143.58 and 49,346.12 is: 68,105.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,050 : 120,143.58 = 49,346.12 : x
  2. Step 2: Convert to fraction form
    87,050/120,143.58 = 49,346.12/x
  3. Step 3: Cross multiply
    87,050x = 120,143.58 × 49,346.12
  4. Step 4: Simplify right side
    87,050x = 5,928,619,515.91
  5. Step 5: Solve for x
    x = 5,928,619,515.91/87,050
  6. Step 6: Final answer
    x = 68,105.91

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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.