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Finding the Fourth Proportional to 68,460.60, 102,690.90 and 24,137.40

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Solution

The fourth proportional to 68,460.60, 102,690.90 and 24,137.40 is: 36,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,460.60 : 102,690.90 = 24,137.40 : x
  2. Step 2: Convert to fraction form
    68,460.60/102,690.90 = 24,137.40/x
  3. Step 3: Cross multiply
    68,460.60x = 102,690.90 × 24,137.40
  4. Step 4: Simplify right side
    68,460.60x = 2,478,691,329.66
  5. Step 5: Solve for x
    x = 2,478,691,329.66/68,460.60
  6. Step 6: Final answer
    x = 36,206.10

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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.