Home / 74,982.69-103,474.35-40,991.43

Finding the Fourth Proportional to 74,982.69, 103,474.35 and 40,991.43

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Solution

The fourth proportional to 74,982.69, 103,474.35 and 40,991.43 is: 56,567.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,982.69 : 103,474.35 = 40,991.43 : x
  2. Step 2: Convert to fraction form
    74,982.69/103,474.35 = 40,991.43/x
  3. Step 3: Cross multiply
    74,982.69x = 103,474.35 × 40,991.43
  4. Step 4: Simplify right side
    74,982.69x = 4,241,561,574.82
  5. Step 5: Solve for x
    x = 4,241,561,574.82/74,982.69
  6. Step 6: Final answer
    x = 56,567.21

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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.