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Finding the Fourth Proportional to 71,313.30, 98,413.53 and 39,047.40

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Solution

The fourth proportional to 71,313.30, 98,413.53 and 39,047.40 is: 53,886.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,313.30 : 98,413.53 = 39,047.40 : x
  2. Step 2: Convert to fraction form
    71,313.30/98,413.53 = 39,047.40/x
  3. Step 3: Cross multiply
    71,313.30x = 98,413.53 × 39,047.40
  4. Step 4: Simplify right side
    71,313.30x = 3,842,792,471.32
  5. Step 5: Solve for x
    x = 3,842,792,471.32/71,313.30
  6. Step 6: Final answer
    x = 53,886.06

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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.