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Finding the Fourth Proportional to 81,105.64, 111,924.98 and 45,294.73

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Solution

The fourth proportional to 81,105.64, 111,924.98 and 45,294.73 is: 62,506.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,105.64 : 111,924.98 = 45,294.73 : x
  2. Step 2: Convert to fraction form
    81,105.64/111,924.98 = 45,294.73/x
  3. Step 3: Cross multiply
    81,105.64x = 111,924.98 × 45,294.73
  4. Step 4: Simplify right side
    81,105.64x = 5,069,611,749.36
  5. Step 5: Solve for x
    x = 5,069,611,749.36/81,105.64
  6. Step 6: Final answer
    x = 62,506.28

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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.