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Finding the Fourth Proportional to 85,140.48, 127,716.48 and 32,555.52

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Solution

The fourth proportional to 85,140.48, 127,716.48 and 32,555.52 is: 48,835.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,140.48 : 127,716.48 = 32,555.52 : x
  2. Step 2: Convert to fraction form
    85,140.48/127,716.48 = 32,555.52/x
  3. Step 3: Cross multiply
    85,140.48x = 127,716.48 × 32,555.52
  4. Step 4: Simplify right side
    85,140.48x = 4,157,876,418.97
  5. Step 5: Solve for x
    x = 4,157,876,418.97/85,140.48
  6. Step 6: Final answer
    x = 48,835.48

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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.