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Finding the Fourth Proportional to 81,033.84, 111,832.32 and 45,230.83

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Solution

The fourth proportional to 81,033.84, 111,832.32 and 45,230.83 is: 62,421.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,033.84 : 111,832.32 = 45,230.83 : x
  2. Step 2: Convert to fraction form
    81,033.84/111,832.32 = 45,230.83/x
  3. Step 3: Cross multiply
    81,033.84x = 111,832.32 × 45,230.83
  4. Step 4: Simplify right side
    81,033.84x = 5,058,268,428.27
  5. Step 5: Solve for x
    x = 5,058,268,428.27/81,033.84
  6. Step 6: Final answer
    x = 62,421.68

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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.