Home / 81,682.32-122,540.48-25,520.16

Finding the Fourth Proportional to 81,682.32, 122,540.48 and 25,520.16

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Solution

The fourth proportional to 81,682.32, 122,540.48 and 25,520.16 is: 38,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,682.32 : 122,540.48 = 25,520.16 : x
  2. Step 2: Convert to fraction form
    81,682.32/122,540.48 = 25,520.16/x
  3. Step 3: Cross multiply
    81,682.32x = 122,540.48 × 25,520.16
  4. Step 4: Simplify right side
    81,682.32x = 3,127,252,656.08
  5. Step 5: Solve for x
    x = 3,127,252,656.08/81,682.32
  6. Step 6: Final answer
    x = 38,285.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.