Home / 76,921.85-115,079.33-58,255.81

Finding the Fourth Proportional to 76,921.85, 115,079.33 and 58,255.81

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Solution

The fourth proportional to 76,921.85, 115,079.33 and 58,255.81 is: 87,153.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,921.85 : 115,079.33 = 58,255.81 : x
  2. Step 2: Convert to fraction form
    76,921.85/115,079.33 = 58,255.81/x
  3. Step 3: Cross multiply
    76,921.85x = 115,079.33 × 58,255.81
  4. Step 4: Simplify right side
    76,921.85x = 6,704,039,441.35
  5. Step 5: Solve for x
    x = 6,704,039,441.35/76,921.85
  6. Step 6: Final answer
    x = 87,153.90

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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.