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Finding the Fourth Proportional to 71,360.30, 98,477.31 and 39,528.54

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Solution

The fourth proportional to 71,360.30, 98,477.31 and 39,528.54 is: 54,549.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,360.30 : 98,477.31 = 39,528.54 : x
  2. Step 2: Convert to fraction form
    71,360.30/98,477.31 = 39,528.54/x
  3. Step 3: Cross multiply
    71,360.30x = 98,477.31 × 39,528.54
  4. Step 4: Simplify right side
    71,360.30x = 3,892,664,287.43
  5. Step 5: Solve for x
    x = 3,892,664,287.43/71,360.30
  6. Step 6: Final answer
    x = 54,549.44

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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.