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Finding the Fourth Proportional to 81,289.01, 112,183.19 and 45,476.88

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Solution

The fourth proportional to 81,289.01, 112,183.19 and 45,476.88 is: 62,760.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,289.01 : 112,183.19 = 45,476.88 : x
  2. Step 2: Convert to fraction form
    81,289.01/112,183.19 = 45,476.88/x
  3. Step 3: Cross multiply
    81,289.01x = 112,183.19 × 45,476.88
  4. Step 4: Simplify right side
    81,289.01x = 5,101,741,242.26
  5. Step 5: Solve for x
    x = 5,101,741,242.26/81,289.01
  6. Step 6: Final answer
    x = 62,760.53

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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.