Home / 91,085.26-125,649.88-74,108.47

Finding the Fourth Proportional to 91,085.26, 125,649.88 and 74,108.47

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Solution

The fourth proportional to 91,085.26, 125,649.88 and 74,108.47 is: 102,230.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,085.26 : 125,649.88 = 74,108.47 : x
  2. Step 2: Convert to fraction form
    91,085.26/125,649.88 = 74,108.47/x
  3. Step 3: Cross multiply
    91,085.26x = 125,649.88 × 74,108.47
  4. Step 4: Simplify right side
    91,085.26x = 9,311,720,362.48
  5. Step 5: Solve for x
    x = 9,311,720,362.48/91,085.26
  6. Step 6: Final answer
    x = 102,230.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.