Home / 77,839.14-107,386.17-57,469.98

Finding the Fourth Proportional to 77,839.14, 107,386.17 and 57,469.98

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Solution

The fourth proportional to 77,839.14, 107,386.17 and 57,469.98 is: 79,285.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,839.14 : 107,386.17 = 57,469.98 : x
  2. Step 2: Convert to fraction form
    77,839.14/107,386.17 = 57,469.98/x
  3. Step 3: Cross multiply
    77,839.14x = 107,386.17 × 57,469.98
  4. Step 4: Simplify right side
    77,839.14x = 6,171,481,042.18
  5. Step 5: Solve for x
    x = 6,171,481,042.18/77,839.14
  6. Step 6: Final answer
    x = 79,285.06

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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.