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Finding the Fourth Proportional to 69,046.40, 103,310.40 and 45,718.40

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Solution

The fourth proportional to 69,046.40, 103,310.40 and 45,718.40 is: 68,405.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,046.40 : 103,310.40 = 45,718.40 : x
  2. Step 2: Convert to fraction form
    69,046.40/103,310.40 = 45,718.40/x
  3. Step 3: Cross multiply
    69,046.40x = 103,310.40 × 45,718.40
  4. Step 4: Simplify right side
    69,046.40x = 4,723,186,191.36
  5. Step 5: Solve for x
    x = 4,723,186,191.36/69,046.40
  6. Step 6: Final answer
    x = 68,405.97

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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.