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Finding the Fourth Proportional to 69,039.30, 103,474.19 and 35,740.40

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Solution

The fourth proportional to 69,039.30, 103,474.19 and 35,740.40 is: 53,566.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,039.30 : 103,474.19 = 35,740.40 : x
  2. Step 2: Convert to fraction form
    69,039.30/103,474.19 = 35,740.40/x
  3. Step 3: Cross multiply
    69,039.30x = 103,474.19 × 35,740.40
  4. Step 4: Simplify right side
    69,039.30x = 3,698,208,244.20
  5. Step 5: Solve for x
    x = 3,698,208,244.20/69,039.30
  6. Step 6: Final answer
    x = 53,566.71

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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.