Home / 87,680.72-120,999.92-47,394.36

Finding the Fourth Proportional to 87,680.72, 120,999.92 and 47,394.36

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Solution

The fourth proportional to 87,680.72, 120,999.92 and 47,394.36 is: 65,404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,680.72 : 120,999.92 = 47,394.36 : x
  2. Step 2: Convert to fraction form
    87,680.72/120,999.92 = 47,394.36/x
  3. Step 3: Cross multiply
    87,680.72x = 120,999.92 × 47,394.36
  4. Step 4: Simplify right side
    87,680.72x = 5,734,713,768.45
  5. Step 5: Solve for x
    x = 5,734,713,768.45/87,680.72
  6. Step 6: Final answer
    x = 65,404.50

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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.