Home / 84,631.92-126,954.24-28,472.16

Finding the Fourth Proportional to 84,631.92, 126,954.24 and 28,472.16

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Solution

The fourth proportional to 84,631.92, 126,954.24 and 28,472.16 is: 42,710.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,631.92 : 126,954.24 = 28,472.16 : x
  2. Step 2: Convert to fraction form
    84,631.92/126,954.24 = 28,472.16/x
  3. Step 3: Cross multiply
    84,631.92x = 126,954.24 × 28,472.16
  4. Step 4: Simplify right side
    84,631.92x = 3,614,661,433.96
  5. Step 5: Solve for x
    x = 3,614,661,433.96/84,631.92
  6. Step 6: Final answer
    x = 42,710.38

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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.