Home / 81,039.60-111,836.76-45,229.44

Finding the Fourth Proportional to 81,039.60, 111,836.76 and 45,229.44

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Solution

The fourth proportional to 81,039.60, 111,836.76 and 45,229.44 is: 62,417.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,039.60 : 111,836.76 = 45,229.44 : x
  2. Step 2: Convert to fraction form
    81,039.60/111,836.76 = 45,229.44/x
  3. Step 3: Cross multiply
    81,039.60x = 111,836.76 × 45,229.44
  4. Step 4: Simplify right side
    81,039.60x = 5,058,314,026.21
  5. Step 5: Solve for x
    x = 5,058,314,026.21/81,039.60
  6. Step 6: Final answer
    x = 62,417.81

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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.