Home / 77,255.30-115,672.20-58,478.42

Finding the Fourth Proportional to 77,255.30, 115,672.20 and 58,478.42

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Solution

The fourth proportional to 77,255.30, 115,672.20 and 58,478.42 is: 87,558.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,255.30 : 115,672.20 = 58,478.42 : x
  2. Step 2: Convert to fraction form
    77,255.30/115,672.20 = 58,478.42/x
  3. Step 3: Cross multiply
    77,255.30x = 115,672.20 × 58,478.42
  4. Step 4: Simplify right side
    77,255.30x = 6,764,327,493.92
  5. Step 5: Solve for x
    x = 6,764,327,493.92/77,255.30
  6. Step 6: Final answer
    x = 87,558.10

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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.