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Finding the Fourth Proportional to 71,356.05, 98,478.03 and 39,524.97

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Solution

The fourth proportional to 71,356.05, 98,478.03 and 39,524.97 is: 54,548.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,356.05 : 98,478.03 = 39,524.97 : x
  2. Step 2: Convert to fraction form
    71,356.05/98,478.03 = 39,524.97/x
  3. Step 3: Cross multiply
    71,356.05x = 98,478.03 × 39,524.97
  4. Step 4: Simplify right side
    71,356.05x = 3,892,341,181.41
  5. Step 5: Solve for x
    x = 3,892,341,181.41/71,356.05
  6. Step 6: Final answer
    x = 54,548.16

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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.