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Finding the Fourth Proportional to 69,090, 95,348.52 and 39,282

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Solution

The fourth proportional to 69,090, 95,348.52 and 39,282 is: 54,211.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,090 : 95,348.52 = 39,282 : x
  2. Step 2: Convert to fraction form
    69,090/95,348.52 = 39,282/x
  3. Step 3: Cross multiply
    69,090x = 95,348.52 × 39,282
  4. Step 4: Simplify right side
    69,090x = 3,745,480,562.64
  5. Step 5: Solve for x
    x = 3,745,480,562.64/69,090
  6. Step 6: Final answer
    x = 54,211.62

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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.