Home / 81,175.95-121,775.36-25,020.60

Finding the Fourth Proportional to 81,175.95, 121,775.36 and 25,020.60

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Solution

The fourth proportional to 81,175.95, 121,775.36 and 25,020.60 is: 37,534.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,175.95 : 121,775.36 = 25,020.60 : x
  2. Step 2: Convert to fraction form
    81,175.95/121,775.36 = 25,020.60/x
  3. Step 3: Cross multiply
    81,175.95x = 121,775.36 × 25,020.60
  4. Step 4: Simplify right side
    81,175.95x = 3,046,892,572.42
  5. Step 5: Solve for x
    x = 3,046,892,572.42/81,175.95
  6. Step 6: Final answer
    x = 37,534.42

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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.