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Finding the Fourth Proportional to 71,243.88, 98,316.96 and 39,413.91

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Solution

The fourth proportional to 71,243.88, 98,316.96 and 39,413.91 is: 54,391.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,243.88 : 98,316.96 = 39,413.91 : x
  2. Step 2: Convert to fraction form
    71,243.88/98,316.96 = 39,413.91/x
  3. Step 3: Cross multiply
    71,243.88x = 98,316.96 × 39,413.91
  4. Step 4: Simplify right side
    71,243.88x = 3,875,055,812.91
  5. Step 5: Solve for x
    x = 3,875,055,812.91/71,243.88
  6. Step 6: Final answer
    x = 54,391.42

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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.