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Finding the Fourth Proportional to 81,073.88, 111,881.22 and 45,261.62

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Solution

The fourth proportional to 81,073.88, 111,881.22 and 45,261.62 is: 62,460.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,073.88 : 111,881.22 = 45,261.62 : x
  2. Step 2: Convert to fraction form
    81,073.88/111,881.22 = 45,261.62/x
  3. Step 3: Cross multiply
    81,073.88x = 111,881.22 × 45,261.62
  4. Step 4: Simplify right side
    81,073.88x = 5,063,925,264.78
  5. Step 5: Solve for x
    x = 5,063,925,264.78/81,073.88
  6. Step 6: Final answer
    x = 62,460.63

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1.5x scale

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.