Home / 81,036.31-111,837.88-45,229.65

Finding the Fourth Proportional to 81,036.31, 111,837.88 and 45,229.65

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Solution

The fourth proportional to 81,036.31, 111,837.88 and 45,229.65 is: 62,421.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,036.31 : 111,837.88 = 45,229.65 : x
  2. Step 2: Convert to fraction form
    81,036.31/111,837.88 = 45,229.65/x
  3. Step 3: Cross multiply
    81,036.31x = 111,837.88 × 45,229.65
  4. Step 4: Simplify right side
    81,036.31x = 5,058,388,169.14
  5. Step 5: Solve for x
    x = 5,058,388,169.14/81,036.31
  6. Step 6: Final answer
    x = 62,421.25

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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.