Home / 76,857.33-115,277.31-20,701.55

Finding the Fourth Proportional to 76,857.33, 115,277.31 and 20,701.55

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Solution

The fourth proportional to 76,857.33, 115,277.31 and 20,701.55 is: 31,049.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,857.33 : 115,277.31 = 20,701.55 : x
  2. Step 2: Convert to fraction form
    76,857.33/115,277.31 = 20,701.55/x
  3. Step 3: Cross multiply
    76,857.33x = 115,277.31 × 20,701.55
  4. Step 4: Simplify right side
    76,857.33x = 2,386,418,420.44
  5. Step 5: Solve for x
    x = 2,386,418,420.44/76,857.33
  6. Step 6: Final answer
    x = 31,049.98

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1.5x scale

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.