Home / 74,531.20-102,855.36-40,542.16

Finding the Fourth Proportional to 74,531.20, 102,855.36 and 40,542.16

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Solution

The fourth proportional to 74,531.20, 102,855.36 and 40,542.16 is: 55,949.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,531.20 : 102,855.36 = 40,542.16 : x
  2. Step 2: Convert to fraction form
    74,531.20/102,855.36 = 40,542.16/x
  3. Step 3: Cross multiply
    74,531.20x = 102,855.36 × 40,542.16
  4. Step 4: Simplify right side
    74,531.20x = 4,169,978,461.98
  5. Step 5: Solve for x
    x = 4,169,978,461.98/74,531.20
  6. Step 6: Final answer
    x = 55,949.43

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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.