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Finding the Fourth Proportional to 55,356.56, 82,963.56 and 20,254.40

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Solution

The fourth proportional to 55,356.56, 82,963.56 and 20,254.40 is: 30,355.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,356.56 : 82,963.56 = 20,254.40 : x
  2. Step 2: Convert to fraction form
    55,356.56/82,963.56 = 20,254.40/x
  3. Step 3: Cross multiply
    55,356.56x = 82,963.56 × 20,254.40
  4. Step 4: Simplify right side
    55,356.56x = 1,680,377,129.66
  5. Step 5: Solve for x
    x = 1,680,377,129.66/55,356.56
  6. Step 6: Final answer
    x = 30,355.52

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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.