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Finding the Fourth Proportional to 71,403.49, 98,536.81 and 39,574.44

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Solution

The fourth proportional to 71,403.49, 98,536.81 and 39,574.44 is: 54,612.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,403.49 : 98,536.81 = 39,574.44 : x
  2. Step 2: Convert to fraction form
    71,403.49/98,536.81 = 39,574.44/x
  3. Step 3: Cross multiply
    71,403.49x = 98,536.81 × 39,574.44
  4. Step 4: Simplify right side
    71,403.49x = 3,899,538,976.20
  5. Step 5: Solve for x
    x = 3,899,538,976.20/71,403.49
  6. Step 6: Final answer
    x = 54,612.72

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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.