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Finding the Fourth Proportional to 69,502.95, 95,914.80 and 39,288.60

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Solution

The fourth proportional to 69,502.95, 95,914.80 and 39,288.60 is: 54,218.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,502.95 : 95,914.80 = 39,288.60 : x
  2. Step 2: Convert to fraction form
    69,502.95/95,914.80 = 39,288.60/x
  3. Step 3: Cross multiply
    69,502.95x = 95,914.80 × 39,288.60
  4. Step 4: Simplify right side
    69,502.95x = 3,768,358,211.28
  5. Step 5: Solve for x
    x = 3,768,358,211.28/69,502.95
  6. Step 6: Final answer
    x = 54,218.68

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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.