Home / 78,233.07-107,961.48-42,422.97

Finding the Fourth Proportional to 78,233.07, 107,961.48 and 42,422.97

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Solution

The fourth proportional to 78,233.07, 107,961.48 and 42,422.97 is: 58,543.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,233.07 : 107,961.48 = 42,422.97 : x
  2. Step 2: Convert to fraction form
    78,233.07/107,961.48 = 42,422.97/x
  3. Step 3: Cross multiply
    78,233.07x = 107,961.48 × 42,422.97
  4. Step 4: Simplify right side
    78,233.07x = 4,580,046,627.20
  5. Step 5: Solve for x
    x = 4,580,046,627.20/78,233.07
  6. Step 6: Final answer
    x = 58,543.61

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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.