Home / 81,257.10-121,837.05-41,891.10

Finding the Fourth Proportional to 81,257.10, 121,837.05 and 41,891.10

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Solution

The fourth proportional to 81,257.10, 121,837.05 and 41,891.10 is: 62,811.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,257.10 : 121,837.05 = 41,891.10 : x
  2. Step 2: Convert to fraction form
    81,257.10/121,837.05 = 41,891.10/x
  3. Step 3: Cross multiply
    81,257.10x = 121,837.05 × 41,891.10
  4. Step 4: Simplify right side
    81,257.10x = 5,103,888,045.26
  5. Step 5: Solve for x
    x = 5,103,888,045.26/81,257.10
  6. Step 6: Final answer
    x = 62,811.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.