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Finding the Fourth Proportional to 67,413.78, 93,043.17 and 39,119.49

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Solution

The fourth proportional to 67,413.78, 93,043.17 and 39,119.49 is: 53,991.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,413.78 : 93,043.17 = 39,119.49 : x
  2. Step 2: Convert to fraction form
    67,413.78/93,043.17 = 39,119.49/x
  3. Step 3: Cross multiply
    67,413.78x = 93,043.17 × 39,119.49
  4. Step 4: Simplify right side
    67,413.78x = 3,639,801,358.38
  5. Step 5: Solve for x
    x = 3,639,801,358.38/67,413.78
  6. Step 6: Final answer
    x = 53,991.95

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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.