Home / 76,778.28-115,211.16-26,869.12

Finding the Fourth Proportional to 76,778.28, 115,211.16 and 26,869.12

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Solution

The fourth proportional to 76,778.28, 115,211.16 and 26,869.12 is: 40,318.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,778.28 : 115,211.16 = 26,869.12 : x
  2. Step 2: Convert to fraction form
    76,778.28/115,211.16 = 26,869.12/x
  3. Step 3: Cross multiply
    76,778.28x = 115,211.16 × 26,869.12
  4. Step 4: Simplify right side
    76,778.28x = 3,095,622,195.35
  5. Step 5: Solve for x
    x = 3,095,622,195.35/76,778.28
  6. Step 6: Final answer
    x = 40,318.98

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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.