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Finding the Fourth Proportional to 69,871.67, 96,419.88 and 38,040.68

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Solution

The fourth proportional to 69,871.67, 96,419.88 and 38,040.68 is: 52,494.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,871.67 : 96,419.88 = 38,040.68 : x
  2. Step 2: Convert to fraction form
    69,871.67/96,419.88 = 38,040.68/x
  3. Step 3: Cross multiply
    69,871.67x = 96,419.88 × 38,040.68
  4. Step 4: Simplify right side
    69,871.67x = 3,667,877,800.72
  5. Step 5: Solve for x
    x = 3,667,877,800.72/69,871.67
  6. Step 6: Final answer
    x = 52,494.49

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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.