Home / 87,391.76-120,582.52-51,086.16

Finding the Fourth Proportional to 87,391.76, 120,582.52 and 51,086.16

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Solution

The fourth proportional to 87,391.76, 120,582.52 and 51,086.16 is: 70,488.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,391.76 : 120,582.52 = 51,086.16 : x
  2. Step 2: Convert to fraction form
    87,391.76/120,582.52 = 51,086.16/x
  3. Step 3: Cross multiply
    87,391.76x = 120,582.52 × 51,086.16
  4. Step 4: Simplify right side
    87,391.76x = 6,160,097,560.86
  5. Step 5: Solve for x
    x = 6,160,097,560.86/87,391.76
  6. Step 6: Final answer
    x = 70,488.31

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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.