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Finding the Fourth Proportional to 71,442.92, 98,591.06 and 39,611

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Solution

The fourth proportional to 71,442.92, 98,591.06 and 39,611 is: 54,663.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,442.92 : 98,591.06 = 39,611 : x
  2. Step 2: Convert to fraction form
    71,442.92/98,591.06 = 39,611/x
  3. Step 3: Cross multiply
    71,442.92x = 98,591.06 × 39,611
  4. Step 4: Simplify right side
    71,442.92x = 3,905,290,477.66
  5. Step 5: Solve for x
    x = 3,905,290,477.66/71,442.92
  6. Step 6: Final answer
    x = 54,663.09

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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.