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Finding the Fourth Proportional to 71,617.36, 98,834.70 and 39,353.33

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Solution

The fourth proportional to 71,617.36, 98,834.70 and 39,353.33 is: 54,309.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,617.36 : 98,834.70 = 39,353.33 : x
  2. Step 2: Convert to fraction form
    71,617.36/98,834.70 = 39,353.33/x
  3. Step 3: Cross multiply
    71,617.36x = 98,834.70 × 39,353.33
  4. Step 4: Simplify right side
    71,617.36x = 3,889,474,367.78
  5. Step 5: Solve for x
    x = 3,889,474,367.78/71,617.36
  6. Step 6: Final answer
    x = 54,309.10

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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.