Home / 87,102.45-120,203.73-51,285.87

Finding the Fourth Proportional to 87,102.45, 120,203.73 and 51,285.87

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Solution

The fourth proportional to 87,102.45, 120,203.73 and 51,285.87 is: 70,775.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,102.45 : 120,203.73 = 51,285.87 : x
  2. Step 2: Convert to fraction form
    87,102.45/120,203.73 = 51,285.87/x
  3. Step 3: Cross multiply
    87,102.45x = 120,203.73 × 51,285.87
  4. Step 4: Simplify right side
    87,102.45x = 6,164,752,870.30
  5. Step 5: Solve for x
    x = 6,164,752,870.30/87,102.45
  6. Step 6: Final answer
    x = 70,775.88

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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.