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Finding the Fourth Proportional to 96,879.78, 133,692.93 and 54,445.50

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Solution

The fourth proportional to 96,879.78, 133,692.93 and 54,445.50 is: 75,134.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,879.78 : 133,692.93 = 54,445.50 : x
  2. Step 2: Convert to fraction form
    96,879.78/133,692.93 = 54,445.50/x
  3. Step 3: Cross multiply
    96,879.78x = 133,692.93 × 54,445.50
  4. Step 4: Simplify right side
    96,879.78x = 7,278,978,420.32
  5. Step 5: Solve for x
    x = 7,278,978,420.32/96,879.78
  6. Step 6: Final answer
    x = 75,134.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.