Home / 74,982.80-103,474.38-40,991.40

Finding the Fourth Proportional to 74,982.80, 103,474.38 and 40,991.40

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Solution

The fourth proportional to 74,982.80, 103,474.38 and 40,991.40 is: 56,567.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,982.80 : 103,474.38 = 40,991.40 : x
  2. Step 2: Convert to fraction form
    74,982.80/103,474.38 = 40,991.40/x
  3. Step 3: Cross multiply
    74,982.80x = 103,474.38 × 40,991.40
  4. Step 4: Simplify right side
    74,982.80x = 4,241,559,700.33
  5. Step 5: Solve for x
    x = 4,241,559,700.33/74,982.80
  6. Step 6: Final answer
    x = 56,567.10

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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.