Home / 84,144.24-126,179.54-31,516.84

Finding the Fourth Proportional to 84,144.24, 126,179.54 and 31,516.84

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Solution

The fourth proportional to 84,144.24, 126,179.54 and 31,516.84 is: 47,261.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,144.24 : 126,179.54 = 31,516.84 : x
  2. Step 2: Convert to fraction form
    84,144.24/126,179.54 = 31,516.84/x
  3. Step 3: Cross multiply
    84,144.24x = 126,179.54 × 31,516.84
  4. Step 4: Simplify right side
    84,144.24x = 3,976,780,373.45
  5. Step 5: Solve for x
    x = 3,976,780,373.45/84,144.24
  6. Step 6: Final answer
    x = 47,261.47

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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.