Home / 91,911.07-137,876.19-25,351.21

Finding the Fourth Proportional to 91,911.07, 137,876.19 and 25,351.21

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Solution

The fourth proportional to 91,911.07, 137,876.19 and 25,351.21 is: 38,029.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,911.07 : 137,876.19 = 25,351.21 : x
  2. Step 2: Convert to fraction form
    91,911.07/137,876.19 = 25,351.21/x
  3. Step 3: Cross multiply
    91,911.07x = 137,876.19 × 25,351.21
  4. Step 4: Simplify right side
    91,911.07x = 3,495,328,514.10
  5. Step 5: Solve for x
    x = 3,495,328,514.10/91,911.07
  6. Step 6: Final answer
    x = 38,029.46

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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.