Home / 71,945.69-99,285.48-40,116.60

Finding the Fourth Proportional to 71,945.69, 99,285.48 and 40,116.60

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Solution

The fourth proportional to 71,945.69, 99,285.48 and 40,116.60 is: 55,361.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,945.69 : 99,285.48 = 40,116.60 : x
  2. Step 2: Convert to fraction form
    71,945.69/99,285.48 = 40,116.60/x
  3. Step 3: Cross multiply
    71,945.69x = 99,285.48 × 40,116.60
  4. Step 4: Simplify right side
    71,945.69x = 3,982,995,886.97
  5. Step 5: Solve for x
    x = 3,982,995,886.97/71,945.69
  6. Step 6: Final answer
    x = 55,361.15

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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.