Home / 85,502.25-128,257.02-23,172.75

Finding the Fourth Proportional to 85,502.25, 128,257.02 and 23,172.75

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Solution

The fourth proportional to 85,502.25, 128,257.02 and 23,172.75 is: 34,760.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,502.25 : 128,257.02 = 23,172.75 : x
  2. Step 2: Convert to fraction form
    85,502.25/128,257.02 = 23,172.75/x
  3. Step 3: Cross multiply
    85,502.25x = 128,257.02 × 23,172.75
  4. Step 4: Simplify right side
    85,502.25x = 2,972,067,860.21
  5. Step 5: Solve for x
    x = 2,972,067,860.21/85,502.25
  6. Step 6: Final answer
    x = 34,760.11

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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.