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Finding the Fourth Proportional to 92,675.64, 138,909.78 and 40,006.20

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Solution

The fourth proportional to 92,675.64, 138,909.78 and 40,006.20 is: 59,964.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,675.64 : 138,909.78 = 40,006.20 : x
  2. Step 2: Convert to fraction form
    92,675.64/138,909.78 = 40,006.20/x
  3. Step 3: Cross multiply
    92,675.64x = 138,909.78 × 40,006.20
  4. Step 4: Simplify right side
    92,675.64x = 5,557,252,440.64
  5. Step 5: Solve for x
    x = 5,557,252,440.64/92,675.64
  6. Step 6: Final answer
    x = 59,964.54

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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.