Home / 81,232.66-121,810.24-47,508.18

Finding the Fourth Proportional to 81,232.66, 121,810.24 and 47,508.18

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Solution

The fourth proportional to 81,232.66, 121,810.24 and 47,508.18 is: 71,239.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,232.66 : 121,810.24 = 47,508.18 : x
  2. Step 2: Convert to fraction form
    81,232.66/121,810.24 = 47,508.18/x
  3. Step 3: Cross multiply
    81,232.66x = 121,810.24 × 47,508.18
  4. Step 4: Simplify right side
    81,232.66x = 5,786,982,807.76
  5. Step 5: Solve for x
    x = 5,786,982,807.76/81,232.66
  6. Step 6: Final answer
    x = 71,239.61

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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.