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Finding the Fourth Proportional to 71,185.03, 98,230.53 and 39,349.60

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Solution

The fourth proportional to 71,185.03, 98,230.53 and 39,349.60 is: 54,299.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,185.03 : 98,230.53 = 39,349.60 : x
  2. Step 2: Convert to fraction form
    71,185.03/98,230.53 = 39,349.60/x
  3. Step 3: Cross multiply
    71,185.03x = 98,230.53 × 39,349.60
  4. Step 4: Simplify right side
    71,185.03x = 3,865,332,063.29
  5. Step 5: Solve for x
    x = 3,865,332,063.29/71,185.03
  6. Step 6: Final answer
    x = 54,299.79

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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.