Home / 77,172.10-115,679.21-52,214.78

Finding the Fourth Proportional to 77,172.10, 115,679.21 and 52,214.78

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Solution

The fourth proportional to 77,172.10, 115,679.21 and 52,214.78 is: 78,268.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,172.10 : 115,679.21 = 52,214.78 : x
  2. Step 2: Convert to fraction form
    77,172.10/115,679.21 = 52,214.78/x
  3. Step 3: Cross multiply
    77,172.10x = 115,679.21 × 52,214.78
  4. Step 4: Simplify right side
    77,172.10x = 6,040,164,239.65
  5. Step 5: Solve for x
    x = 6,040,164,239.65/77,172.10
  6. Step 6: Final answer
    x = 78,268.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.