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Finding the Fourth Proportional to 57,869.84, 86,761.08 and 20,413.52

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Solution

The fourth proportional to 57,869.84, 86,761.08 and 20,413.52 is: 30,604.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,869.84 : 86,761.08 = 20,413.52 : x
  2. Step 2: Convert to fraction form
    57,869.84/86,761.08 = 20,413.52/x
  3. Step 3: Cross multiply
    57,869.84x = 86,761.08 × 20,413.52
  4. Step 4: Simplify right side
    57,869.84x = 1,771,099,041.80
  5. Step 5: Solve for x
    x = 1,771,099,041.80/57,869.84
  6. Step 6: Final answer
    x = 30,604.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.