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Finding the Fourth Proportional to 69,729.72, 96,231.60 and 39,514.92

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Solution

The fourth proportional to 69,729.72, 96,231.60 and 39,514.92 is: 54,533.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,729.72 : 96,231.60 = 39,514.92 : x
  2. Step 2: Convert to fraction form
    69,729.72/96,231.60 = 39,514.92/x
  3. Step 3: Cross multiply
    69,729.72x = 96,231.60 × 39,514.92
  4. Step 4: Simplify right side
    69,729.72x = 3,802,583,975.47
  5. Step 5: Solve for x
    x = 3,802,583,975.47/69,729.72
  6. Step 6: Final answer
    x = 54,533.19

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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.