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Finding the Fourth Proportional to 71,019.94, 98,004.65 and 39,188.43

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Solution

The fourth proportional to 71,019.94, 98,004.65 and 39,188.43 is: 54,078.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,019.94 : 98,004.65 = 39,188.43 : x
  2. Step 2: Convert to fraction form
    71,019.94/98,004.65 = 39,188.43/x
  3. Step 3: Cross multiply
    71,019.94x = 98,004.65 × 39,188.43
  4. Step 4: Simplify right side
    71,019.94x = 3,840,647,974.15
  5. Step 5: Solve for x
    x = 3,840,647,974.15/71,019.94
  6. Step 6: Final answer
    x = 54,078.45

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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.