Home / 87,005,021.32-120,070,086.33-49,842,483.97

Finding the Fourth Proportional to 87,005,021.32, 120,070,086.33 and 49,842,483.97

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Solution

The fourth proportional to 87,005,021.32, 120,070,086.33 and 49,842,483.97 is: 68,784,436.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,005,021.32 : 120,070,086.33 = 49,842,483.97 : x
  2. Step 2: Convert to fraction form
    87,005,021.32/120,070,086.33 = 49,842,483.97/x
  3. Step 3: Cross multiply
    87,005,021.32x = 120,070,086.33 × 49,842,483.97
  4. Step 4: Simplify right side
    87,005,021.32x = 5,984,591,353,179,541
  5. Step 5: Solve for x
    x = 5,984,591,353,179,541/87,005,021.32
  6. Step 6: Final answer
    x = 68,784,436.37

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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.