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Finding the Fourth Proportional to 68,946.60, 103,310.55 and 45,545.70

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Solution

The fourth proportional to 68,946.60, 103,310.55 and 45,545.70 is: 68,246.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,946.60 : 103,310.55 = 45,545.70 : x
  2. Step 2: Convert to fraction form
    68,946.60/103,310.55 = 45,545.70/x
  3. Step 3: Cross multiply
    68,946.60x = 103,310.55 × 45,545.70
  4. Step 4: Simplify right side
    68,946.60x = 4,705,351,317.14
  5. Step 5: Solve for x
    x = 4,705,351,317.14/68,946.60
  6. Step 6: Final answer
    x = 68,246.31

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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.