Home / 45,436.12-68,131.14-20,791

Finding the Fourth Proportional to 45,436.12, 68,131.14 and 20,791

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Solution

The fourth proportional to 45,436.12, 68,131.14 and 20,791 is: 31,175.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,436.12 : 68,131.14 = 20,791 : x
  2. Step 2: Convert to fraction form
    45,436.12/68,131.14 = 20,791/x
  3. Step 3: Cross multiply
    45,436.12x = 68,131.14 × 20,791
  4. Step 4: Simplify right side
    45,436.12x = 1,416,514,531.74
  5. Step 5: Solve for x
    x = 1,416,514,531.74/45,436.12
  6. Step 6: Final answer
    x = 31,175.96

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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.