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Finding the Fourth Proportional to 55,371.89, 76,413.03 and 30,221.39

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Solution

The fourth proportional to 55,371.89, 76,413.03 and 30,221.39 is: 41,705.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,371.89 : 76,413.03 = 30,221.39 : x
  2. Step 2: Convert to fraction form
    55,371.89/76,413.03 = 30,221.39/x
  3. Step 3: Cross multiply
    55,371.89x = 76,413.03 × 30,221.39
  4. Step 4: Simplify right side
    55,371.89x = 2,309,307,980.71
  5. Step 5: Solve for x
    x = 2,309,307,980.71/55,371.89
  6. Step 6: Final answer
    x = 41,705.42

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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.