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Finding the Fourth Proportional to 40,137.80, 60,206.70 and 19,363.40

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Solution

The fourth proportional to 40,137.80, 60,206.70 and 19,363.40 is: 29,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,137.80 : 60,206.70 = 19,363.40 : x
  2. Step 2: Convert to fraction form
    40,137.80/60,206.70 = 19,363.40/x
  3. Step 3: Cross multiply
    40,137.80x = 60,206.70 × 19,363.40
  4. Step 4: Simplify right side
    40,137.80x = 1,165,806,414.78
  5. Step 5: Solve for x
    x = 1,165,806,414.78/40,137.80
  6. Step 6: Final answer
    x = 29,045.10

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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.