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Finding the Fourth Proportional to 81,103.64, 111,922.22 and 45,292.73

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Solution

The fourth proportional to 81,103.64, 111,922.22 and 45,292.73 is: 62,503.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,103.64 : 111,922.22 = 45,292.73 : x
  2. Step 2: Convert to fraction form
    81,103.64/111,922.22 = 45,292.73/x
  3. Step 3: Cross multiply
    81,103.64x = 111,922.22 × 45,292.73
  4. Step 4: Simplify right side
    81,103.64x = 5,069,262,445.08
  5. Step 5: Solve for x
    x = 5,069,262,445.08/81,103.64
  6. Step 6: Final answer
    x = 62,503.52

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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.