Home / 71,721.72-98,986.32-43,042.68

Finding the Fourth Proportional to 71,721.72, 98,986.32 and 43,042.68

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Solution

The fourth proportional to 71,721.72, 98,986.32 and 43,042.68 is: 59,405.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,721.72 : 98,986.32 = 43,042.68 : x
  2. Step 2: Convert to fraction form
    71,721.72/98,986.32 = 43,042.68/x
  3. Step 3: Cross multiply
    71,721.72x = 98,986.32 × 43,042.68
  4. Step 4: Simplify right side
    71,721.72x = 4,260,636,496.14
  5. Step 5: Solve for x
    x = 4,260,636,496.14/71,721.72
  6. Step 6: Final answer
    x = 59,405.11

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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.