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Finding the Fourth Proportional to 55,151.60, 82,761.60 and 28,875.20

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Solution

The fourth proportional to 55,151.60, 82,761.60 and 28,875.20 is: 43,330.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,151.60 : 82,761.60 = 28,875.20 : x
  2. Step 2: Convert to fraction form
    55,151.60/82,761.60 = 28,875.20/x
  3. Step 3: Cross multiply
    55,151.60x = 82,761.60 × 28,875.20
  4. Step 4: Simplify right side
    55,151.60x = 2,389,757,752.32
  5. Step 5: Solve for x
    x = 2,389,757,752.32/55,151.60
  6. Step 6: Final answer
    x = 43,330.71

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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.