Home / 51,988.23-77,982.35-20,413.16

Finding the Fourth Proportional to 51,988.23, 77,982.35 and 20,413.16

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Solution

The fourth proportional to 51,988.23, 77,982.35 and 20,413.16 is: 30,619.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,988.23 : 77,982.35 = 20,413.16 : x
  2. Step 2: Convert to fraction form
    51,988.23/77,982.35 = 20,413.16/x
  3. Step 3: Cross multiply
    51,988.23x = 77,982.35 × 20,413.16
  4. Step 4: Simplify right side
    51,988.23x = 1,591,866,187.73
  5. Step 5: Solve for x
    x = 1,591,866,187.73/51,988.23
  6. Step 6: Final answer
    x = 30,619.74

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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.