Home / 55,115.72-76,047.18-31,236.92

Finding the Fourth Proportional to 55,115.72, 76,047.18 and 31,236.92

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Solution

The fourth proportional to 55,115.72, 76,047.18 and 31,236.92 is: 43,099.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,115.72 : 76,047.18 = 31,236.92 : x
  2. Step 2: Convert to fraction form
    55,115.72/76,047.18 = 31,236.92/x
  3. Step 3: Cross multiply
    55,115.72x = 76,047.18 × 31,236.92
  4. Step 4: Simplify right side
    55,115.72x = 2,375,479,677.89
  5. Step 5: Solve for x
    x = 2,375,479,677.89/55,115.72
  6. Step 6: Final answer
    x = 43,099.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.