Home / 87,734.12-121,040.60-57,536.20

Finding the Fourth Proportional to 87,734.12, 121,040.60 and 57,536.20

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Solution

The fourth proportional to 87,734.12, 121,040.60 and 57,536.20 is: 79,378.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,734.12 : 121,040.60 = 57,536.20 : x
  2. Step 2: Convert to fraction form
    87,734.12/121,040.60 = 57,536.20/x
  3. Step 3: Cross multiply
    87,734.12x = 121,040.60 × 57,536.20
  4. Step 4: Simplify right side
    87,734.12x = 6,964,216,169.72
  5. Step 5: Solve for x
    x = 6,964,216,169.72/87,734.12
  6. Step 6: Final answer
    x = 79,378.65

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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.