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Finding the Fourth Proportional to 69,761.59, 104,640.04 and 30,318.71

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Solution

The fourth proportional to 69,761.59, 104,640.04 and 30,318.71 is: 45,477.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,761.59 : 104,640.04 = 30,318.71 : x
  2. Step 2: Convert to fraction form
    69,761.59/104,640.04 = 30,318.71/x
  3. Step 3: Cross multiply
    69,761.59x = 104,640.04 × 30,318.71
  4. Step 4: Simplify right side
    69,761.59x = 3,172,551,102.95
  5. Step 5: Solve for x
    x = 3,172,551,102.95/69,761.59
  6. Step 6: Final answer
    x = 45,477.05

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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.