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Finding the Fourth Proportional to 67,005.78, 100,909.99 and 61,027.02

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Solution

The fourth proportional to 67,005.78, 100,909.99 and 61,027.02 is: 91,906.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,005.78 : 100,909.99 = 61,027.02 : x
  2. Step 2: Convert to fraction form
    67,005.78/100,909.99 = 61,027.02/x
  3. Step 3: Cross multiply
    67,005.78x = 100,909.99 × 61,027.02
  4. Step 4: Simplify right side
    67,005.78x = 6,158,235,977.93
  5. Step 5: Solve for x
    x = 6,158,235,977.93/67,005.78
  6. Step 6: Final answer
    x = 91,906.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.