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Finding the Fourth Proportional to 71,026.96, 98,020.40 and 40,822.08

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Solution

The fourth proportional to 71,026.96, 98,020.40 and 40,822.08 is: 56,336.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,026.96 : 98,020.40 = 40,822.08 : x
  2. Step 2: Convert to fraction form
    71,026.96/98,020.40 = 40,822.08/x
  3. Step 3: Cross multiply
    71,026.96x = 98,020.40 × 40,822.08
  4. Step 4: Simplify right side
    71,026.96x = 4,001,396,610.43
  5. Step 5: Solve for x
    x = 4,001,396,610.43/71,026.96
  6. Step 6: Final answer
    x = 56,336.31

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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.