Home / 89,413.70-123,339.60-55,821.38

Finding the Fourth Proportional to 89,413.70, 123,339.60 and 55,821.38

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Solution

The fourth proportional to 89,413.70, 123,339.60 and 55,821.38 is: 77,001.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,413.70 : 123,339.60 = 55,821.38 : x
  2. Step 2: Convert to fraction form
    89,413.70/123,339.60 = 55,821.38/x
  3. Step 3: Cross multiply
    89,413.70x = 123,339.60 × 55,821.38
  4. Step 4: Simplify right side
    89,413.70x = 6,884,986,680.65
  5. Step 5: Solve for x
    x = 6,884,986,680.65/89,413.70
  6. Step 6: Final answer
    x = 77,001.47

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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.