Home / 81,270.18-121,905.27-34,490.25

Finding the Fourth Proportional to 81,270.18, 121,905.27 and 34,490.25

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Solution

The fourth proportional to 81,270.18, 121,905.27 and 34,490.25 is: 51,735.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,270.18 : 121,905.27 = 34,490.25 : x
  2. Step 2: Convert to fraction form
    81,270.18/121,905.27 = 34,490.25/x
  3. Step 3: Cross multiply
    81,270.18x = 121,905.27 × 34,490.25
  4. Step 4: Simplify right side
    81,270.18x = 4,204,543,238.62
  5. Step 5: Solve for x
    x = 4,204,543,238.62/81,270.18
  6. Step 6: Final answer
    x = 51,735.38

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Similar ratio
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1.5x scale

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.