Home / 78,148.44-107,805.19-49,419.69

Finding the Fourth Proportional to 78,148.44, 107,805.19 and 49,419.69

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Solution

The fourth proportional to 78,148.44, 107,805.19 and 49,419.69 is: 68,174.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,148.44 : 107,805.19 = 49,419.69 : x
  2. Step 2: Convert to fraction form
    78,148.44/107,805.19 = 49,419.69/x
  3. Step 3: Cross multiply
    78,148.44x = 107,805.19 × 49,419.69
  4. Step 4: Simplify right side
    78,148.44x = 5,327,699,070.19
  5. Step 5: Solve for x
    x = 5,327,699,070.19/78,148.44
  6. Step 6: Final answer
    x = 68,174.09

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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.