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Finding the Fourth Proportional to 68,908.32, 103,368.15 and 29,465.78

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Solution

The fourth proportional to 68,908.32, 103,368.15 and 29,465.78 is: 44,201.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,908.32 : 103,368.15 = 29,465.78 : x
  2. Step 2: Convert to fraction form
    68,908.32/103,368.15 = 29,465.78/x
  3. Step 3: Cross multiply
    68,908.32x = 103,368.15 × 29,465.78
  4. Step 4: Simplify right side
    68,908.32x = 3,045,822,650.07
  5. Step 5: Solve for x
    x = 3,045,822,650.07/68,908.32
  6. Step 6: Final answer
    x = 44,201.09

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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.