Home / 79,781.07-110,126.07-71,268.42

Finding the Fourth Proportional to 79,781.07, 110,126.07 and 71,268.42

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Solution

The fourth proportional to 79,781.07, 110,126.07 and 71,268.42 is: 98,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,781.07 : 110,126.07 = 71,268.42 : x
  2. Step 2: Convert to fraction form
    79,781.07/110,126.07 = 71,268.42/x
  3. Step 3: Cross multiply
    79,781.07x = 110,126.07 × 71,268.42
  4. Step 4: Simplify right side
    79,781.07x = 7,848,511,009.71
  5. Step 5: Solve for x
    x = 7,848,511,009.71/79,781.07
  6. Step 6: Final answer
    x = 98,375.60

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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.