Home / 54,281.08-81,413.22-21,016.60

Finding the Fourth Proportional to 54,281.08, 81,413.22 and 21,016.60

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Solution

The fourth proportional to 54,281.08, 81,413.22 and 21,016.60 is: 31,521.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,281.08 : 81,413.22 = 21,016.60 : x
  2. Step 2: Convert to fraction form
    54,281.08/81,413.22 = 21,016.60/x
  3. Step 3: Cross multiply
    54,281.08x = 81,413.22 × 21,016.60
  4. Step 4: Simplify right side
    54,281.08x = 1,711,029,079.45
  5. Step 5: Solve for x
    x = 1,711,029,079.45/54,281.08
  6. Step 6: Final answer
    x = 31,521.65

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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.