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Finding the Fourth Proportional to 69,465.66, 103,588.37 and 68,834.13

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Solution

The fourth proportional to 69,465.66, 103,588.37 and 68,834.13 is: 102,646.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,465.66 : 103,588.37 = 68,834.13 : x
  2. Step 2: Convert to fraction form
    69,465.66/103,588.37 = 68,834.13/x
  3. Step 3: Cross multiply
    69,465.66x = 103,588.37 × 68,834.13
  4. Step 4: Simplify right side
    69,465.66x = 7,130,414,982.90
  5. Step 5: Solve for x
    x = 7,130,414,982.90/69,465.66
  6. Step 6: Final answer
    x = 102,646.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.