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Finding the Fourth Proportional to 69,838.52, 96,379.33 and 39,625.12

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Solution

The fourth proportional to 69,838.52, 96,379.33 and 39,625.12 is: 54,683.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,838.52 : 96,379.33 = 39,625.12 : x
  2. Step 2: Convert to fraction form
    69,838.52/96,379.33 = 39,625.12/x
  3. Step 3: Cross multiply
    69,838.52x = 96,379.33 × 39,625.12
  4. Step 4: Simplify right side
    69,838.52x = 3,819,042,516.77
  5. Step 5: Solve for x
    x = 3,819,042,516.77/69,838.52
  6. Step 6: Final answer
    x = 54,683.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.