Home / 87,682.12-121,001.33-47,395.75

Finding the Fourth Proportional to 87,682.12, 121,001.33 and 47,395.75

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Solution

The fourth proportional to 87,682.12, 121,001.33 and 47,395.75 is: 65,406.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,682.12 : 121,001.33 = 47,395.75 : x
  2. Step 2: Convert to fraction form
    87,682.12/121,001.33 = 47,395.75/x
  3. Step 3: Cross multiply
    87,682.12x = 121,001.33 × 47,395.75
  4. Step 4: Simplify right side
    87,682.12x = 5,734,948,786.35
  5. Step 5: Solve for x
    x = 5,734,948,786.35/87,682.12
  6. Step 6: Final answer
    x = 65,406.14

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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.