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Finding the Fourth Proportional to 40,959.03, 61,438.14 and 18,766.11

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Solution

The fourth proportional to 40,959.03, 61,438.14 and 18,766.11 is: 28,148.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,959.03 : 61,438.14 = 18,766.11 : x
  2. Step 2: Convert to fraction form
    40,959.03/61,438.14 = 18,766.11/x
  3. Step 3: Cross multiply
    40,959.03x = 61,438.14 × 18,766.11
  4. Step 4: Simplify right side
    40,959.03x = 1,152,954,893.44
  5. Step 5: Solve for x
    x = 1,152,954,893.44/40,959.03
  6. Step 6: Final answer
    x = 28,148.98

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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.