Home / 76,965.93-115,286.85-39,411.90

Finding the Fourth Proportional to 76,965.93, 115,286.85 and 39,411.90

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Solution

The fourth proportional to 76,965.93, 115,286.85 and 39,411.90 is: 59,034.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,965.93 : 115,286.85 = 39,411.90 : x
  2. Step 2: Convert to fraction form
    76,965.93/115,286.85 = 39,411.90/x
  3. Step 3: Cross multiply
    76,965.93x = 115,286.85 × 39,411.90
  4. Step 4: Simplify right side
    76,965.93x = 4,543,673,803.52
  5. Step 5: Solve for x
    x = 4,543,673,803.52/76,965.93
  6. Step 6: Final answer
    x = 59,034.87

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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.