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Finding the Fourth Proportional to 68,477.43, 102,574.67 and 40,310.69

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Solution

The fourth proportional to 68,477.43, 102,574.67 and 40,310.69 is: 60,382.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,477.43 : 102,574.67 = 40,310.69 : x
  2. Step 2: Convert to fraction form
    68,477.43/102,574.67 = 40,310.69/x
  3. Step 3: Cross multiply
    68,477.43x = 102,574.67 × 40,310.69
  4. Step 4: Simplify right side
    68,477.43x = 4,134,855,779.11
  5. Step 5: Solve for x
    x = 4,134,855,779.11/68,477.43
  6. Step 6: Final answer
    x = 60,382.75

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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.