Home / 76,948.64-115,417.49-20,791.95

Finding the Fourth Proportional to 76,948.64, 115,417.49 and 20,791.95

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Solution

The fourth proportional to 76,948.64, 115,417.49 and 20,791.95 is: 31,186.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,948.64 : 115,417.49 = 20,791.95 : x
  2. Step 2: Convert to fraction form
    76,948.64/115,417.49 = 20,791.95/x
  3. Step 3: Cross multiply
    76,948.64x = 115,417.49 × 20,791.95
  4. Step 4: Simplify right side
    76,948.64x = 2,399,754,104.12
  5. Step 5: Solve for x
    x = 2,399,754,104.12/76,948.64
  6. Step 6: Final answer
    x = 31,186.44

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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.