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Finding the Fourth Proportional to 81,041.72, 111,833.46 and 45,236.88

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Solution

The fourth proportional to 81,041.72, 111,833.46 and 45,236.88 is: 62,424.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,041.72 : 111,833.46 = 45,236.88 : x
  2. Step 2: Convert to fraction form
    81,041.72/111,833.46 = 45,236.88/x
  3. Step 3: Cross multiply
    81,041.72x = 111,833.46 × 45,236.88
  4. Step 4: Simplify right side
    81,041.72x = 5,058,996,810.00
  5. Step 5: Solve for x
    x = 5,058,996,810.00/81,041.72
  6. Step 6: Final answer
    x = 62,424.60

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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.