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Finding the Fourth Proportional to 70,708.73, 97,578.02 and 38,879.69

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Solution

The fourth proportional to 70,708.73, 97,578.02 and 38,879.69 is: 53,653.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,708.73 : 97,578.02 = 38,879.69 : x
  2. Step 2: Convert to fraction form
    70,708.73/97,578.02 = 38,879.69/x
  3. Step 3: Cross multiply
    70,708.73x = 97,578.02 × 38,879.69
  4. Step 4: Simplify right side
    70,708.73x = 3,793,802,777.72
  5. Step 5: Solve for x
    x = 3,793,802,777.72/70,708.73
  6. Step 6: Final answer
    x = 53,653.96

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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.