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Finding the Fourth Proportional to 71,274.52, 98,360.90 and 39,446.36

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Solution

The fourth proportional to 71,274.52, 98,360.90 and 39,446.36 is: 54,437.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,274.52 : 98,360.90 = 39,446.36 : x
  2. Step 2: Convert to fraction form
    71,274.52/98,360.90 = 39,446.36/x
  3. Step 3: Cross multiply
    71,274.52x = 98,360.90 × 39,446.36
  4. Step 4: Simplify right side
    71,274.52x = 3,879,979,471.32
  5. Step 5: Solve for x
    x = 3,879,979,471.32/71,274.52
  6. Step 6: Final answer
    x = 54,437.12

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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.