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Finding the Fourth Proportional to 69,502.71, 104,380.44 and 66,683.91

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Solution

The fourth proportional to 69,502.71, 104,380.44 and 66,683.91 is: 100,147.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,502.71 : 104,380.44 = 66,683.91 : x
  2. Step 2: Convert to fraction form
    69,502.71/104,380.44 = 66,683.91/x
  3. Step 3: Cross multiply
    69,502.71x = 104,380.44 × 66,683.91
  4. Step 4: Simplify right side
    69,502.71x = 6,960,495,866.72
  5. Step 5: Solve for x
    x = 6,960,495,866.72/69,502.71
  6. Step 6: Final answer
    x = 100,147.11

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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.