Home / 81,865.01-112,989.19-51,252.34

Finding the Fourth Proportional to 81,865.01, 112,989.19 and 51,252.34

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Solution

The fourth proportional to 81,865.01, 112,989.19 and 51,252.34 is: 70,737.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,865.01 : 112,989.19 = 51,252.34 : x
  2. Step 2: Convert to fraction form
    81,865.01/112,989.19 = 51,252.34/x
  3. Step 3: Cross multiply
    81,865.01x = 112,989.19 × 51,252.34
  4. Step 4: Simplify right side
    81,865.01x = 5,790,960,382.20
  5. Step 5: Solve for x
    x = 5,790,960,382.20/81,865.01
  6. Step 6: Final answer
    x = 70,737.92

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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.