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Finding the Fourth Proportional to 71,359.82, 98,383.19 and 61,395.30

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Solution

The fourth proportional to 71,359.82, 98,383.19 and 61,395.30 is: 84,645.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,359.82 : 98,383.19 = 61,395.30 : x
  2. Step 2: Convert to fraction form
    71,359.82/98,383.19 = 61,395.30/x
  3. Step 3: Cross multiply
    71,359.82x = 98,383.19 × 61,395.30
  4. Step 4: Simplify right side
    71,359.82x = 6,040,264,973.09
  5. Step 5: Solve for x
    x = 6,040,264,973.09/71,359.82
  6. Step 6: Final answer
    x = 84,645.18

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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.