Home / 76,713.60-115,061.44-20,558.56

Finding the Fourth Proportional to 76,713.60, 115,061.44 and 20,558.56

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Solution

The fourth proportional to 76,713.60, 115,061.44 and 20,558.56 is: 30,835.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,713.60 : 115,061.44 = 20,558.56 : x
  2. Step 2: Convert to fraction form
    76,713.60/115,061.44 = 20,558.56/x
  3. Step 3: Cross multiply
    76,713.60x = 115,061.44 × 20,558.56
  4. Step 4: Simplify right side
    76,713.60x = 2,365,497,517.93
  5. Step 5: Solve for x
    x = 2,365,497,517.93/76,713.60
  6. Step 6: Final answer
    x = 30,835.44

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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.