Home / 39,456.38-54,413.74-30,843.70

Finding the Fourth Proportional to 39,456.38, 54,413.74 and 30,843.70

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Solution

The fourth proportional to 39,456.38, 54,413.74 and 30,843.70 is: 42,536.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,456.38 : 54,413.74 = 30,843.70 : x
  2. Step 2: Convert to fraction form
    39,456.38/54,413.74 = 30,843.70/x
  3. Step 3: Cross multiply
    39,456.38x = 54,413.74 × 30,843.70
  4. Step 4: Simplify right side
    39,456.38x = 1,678,321,281.04
  5. Step 5: Solve for x
    x = 1,678,321,281.04/39,456.38
  6. Step 6: Final answer
    x = 42,536.12

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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.