Home / 78,127.26-107,744.75-51,259.56

Finding the Fourth Proportional to 78,127.26, 107,744.75 and 51,259.56

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Solution

The fourth proportional to 78,127.26, 107,744.75 and 51,259.56 is: 70,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,127.26 : 107,744.75 = 51,259.56 : x
  2. Step 2: Convert to fraction form
    78,127.26/107,744.75 = 51,259.56/x
  3. Step 3: Cross multiply
    78,127.26x = 107,744.75 × 51,259.56
  4. Step 4: Simplify right side
    78,127.26x = 5,522,948,605.46
  5. Step 5: Solve for x
    x = 5,522,948,605.46/78,127.26
  6. Step 6: Final answer
    x = 70,691.70

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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.