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Finding the Fourth Proportional to 81,049.81, 111,845.05 and 45,239.04

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Solution

The fourth proportional to 81,049.81, 111,845.05 and 45,239.04 is: 62,427.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,049.81 : 111,845.05 = 45,239.04 : x
  2. Step 2: Convert to fraction form
    81,049.81/111,845.05 = 45,239.04/x
  3. Step 3: Cross multiply
    81,049.81x = 111,845.05 × 45,239.04
  4. Step 4: Simplify right side
    81,049.81x = 5,059,762,690.75
  5. Step 5: Solve for x
    x = 5,059,762,690.75/81,049.81
  6. Step 6: Final answer
    x = 62,427.82

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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.