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Finding the Fourth Proportional to 81,417.82, 122,120.88 and 25,256.48

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Solution

The fourth proportional to 81,417.82, 122,120.88 and 25,256.48 is: 37,882.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,417.82 : 122,120.88 = 25,256.48 : x
  2. Step 2: Convert to fraction form
    81,417.82/122,120.88 = 25,256.48/x
  3. Step 3: Cross multiply
    81,417.82x = 122,120.88 × 25,256.48
  4. Step 4: Simplify right side
    81,417.82x = 3,084,343,117.73
  5. Step 5: Solve for x
    x = 3,084,343,117.73/81,417.82
  6. Step 6: Final answer
    x = 37,882.90

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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.