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Finding the Fourth Proportional to 68,807.70, 103,114.35 and 48,006.90

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Solution

The fourth proportional to 68,807.70, 103,114.35 and 48,006.90 is: 71,942.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,807.70 : 103,114.35 = 48,006.90 : x
  2. Step 2: Convert to fraction form
    68,807.70/103,114.35 = 48,006.90/x
  3. Step 3: Cross multiply
    68,807.70x = 103,114.35 × 48,006.90
  4. Step 4: Simplify right side
    68,807.70x = 4,950,200,289.02
  5. Step 5: Solve for x
    x = 4,950,200,289.02/68,807.70
  6. Step 6: Final answer
    x = 71,942.53

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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.