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Finding the Fourth Proportional to 55,155.78, 82,703.43 and 25,557.30

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Solution

The fourth proportional to 55,155.78, 82,703.43 and 25,557.30 is: 38,321.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,155.78 : 82,703.43 = 25,557.30 : x
  2. Step 2: Convert to fraction form
    55,155.78/82,703.43 = 25,557.30/x
  3. Step 3: Cross multiply
    55,155.78x = 82,703.43 × 25,557.30
  4. Step 4: Simplify right side
    55,155.78x = 2,113,676,371.54
  5. Step 5: Solve for x
    x = 2,113,676,371.54/55,155.78
  6. Step 6: Final answer
    x = 38,321.94

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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.