Home / 77,029.80-115,544.70-68,476.20

Finding the Fourth Proportional to 77,029.80, 115,544.70 and 68,476.20

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Solution

The fourth proportional to 77,029.80, 115,544.70 and 68,476.20 is: 102,714.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,029.80 : 115,544.70 = 68,476.20 : x
  2. Step 2: Convert to fraction form
    77,029.80/115,544.70 = 68,476.20/x
  3. Step 3: Cross multiply
    77,029.80x = 115,544.70 × 68,476.20
  4. Step 4: Simplify right side
    77,029.80x = 7,912,061,986.14
  5. Step 5: Solve for x
    x = 7,912,061,986.14/77,029.80
  6. Step 6: Final answer
    x = 102,714.30

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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.