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Finding the Fourth Proportional to 69,691.22, 104,378.71 and 44,390.87

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Solution

The fourth proportional to 69,691.22, 104,378.71 and 44,390.87 is: 66,485.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,691.22 : 104,378.71 = 44,390.87 : x
  2. Step 2: Convert to fraction form
    69,691.22/104,378.71 = 44,390.87/x
  3. Step 3: Cross multiply
    69,691.22x = 104,378.71 × 44,390.87
  4. Step 4: Simplify right side
    69,691.22x = 4,633,461,746.38
  5. Step 5: Solve for x
    x = 4,633,461,746.38/69,691.22
  6. Step 6: Final answer
    x = 66,485.59

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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.