Home / 84,261.38-126,405.04-31,674.56

Finding the Fourth Proportional to 84,261.38, 126,405.04 and 31,674.56

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Solution

The fourth proportional to 84,261.38, 126,405.04 and 31,674.56 is: 47,516.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,261.38 : 126,405.04 = 31,674.56 : x
  2. Step 2: Convert to fraction form
    84,261.38/126,405.04 = 31,674.56/x
  3. Step 3: Cross multiply
    84,261.38x = 126,405.04 × 31,674.56
  4. Step 4: Simplify right side
    84,261.38x = 4,003,824,023.78
  5. Step 5: Solve for x
    x = 4,003,824,023.78/84,261.38
  6. Step 6: Final answer
    x = 47,516.72

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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.