Home / 83,949.31-115,814.69-55,605.79

Finding the Fourth Proportional to 83,949.31, 115,814.69 and 55,605.79

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Solution

The fourth proportional to 83,949.31, 115,814.69 and 55,605.79 is: 76,712.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,949.31 : 115,814.69 = 55,605.79 : x
  2. Step 2: Convert to fraction form
    83,949.31/115,814.69 = 55,605.79/x
  3. Step 3: Cross multiply
    83,949.31x = 115,814.69 × 55,605.79
  4. Step 4: Simplify right side
    83,949.31x = 6,439,966,751.98
  5. Step 5: Solve for x
    x = 6,439,966,751.98/83,949.31
  6. Step 6: Final answer
    x = 76,712.57

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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.