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Finding the Fourth Proportional to 74,081.56, 102,027.41 and 64,006.78

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Solution

The fourth proportional to 74,081.56, 102,027.41 and 64,006.78 is: 88,152.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,081.56 : 102,027.41 = 64,006.78 : x
  2. Step 2: Convert to fraction form
    74,081.56/102,027.41 = 64,006.78/x
  3. Step 3: Cross multiply
    74,081.56x = 102,027.41 × 64,006.78
  4. Step 4: Simplify right side
    74,081.56x = 6,530,445,650.76
  5. Step 5: Solve for x
    x = 6,530,445,650.76/74,081.56
  6. Step 6: Final answer
    x = 88,152.11

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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.