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Finding the Fourth Proportional to 68,508.08, 102,503.72 and 40,443.40

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Solution

The fourth proportional to 68,508.08, 102,503.72 and 40,443.40 is: 60,512.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,508.08 : 102,503.72 = 40,443.40 : x
  2. Step 2: Convert to fraction form
    68,508.08/102,503.72 = 40,443.40/x
  3. Step 3: Cross multiply
    68,508.08x = 102,503.72 × 40,443.40
  4. Step 4: Simplify right side
    68,508.08x = 4,145,598,949.45
  5. Step 5: Solve for x
    x = 4,145,598,949.45/68,508.08
  6. Step 6: Final answer
    x = 60,512.55

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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.