Home / 103,828.13-155,755.10-40,640.03

Finding the Fourth Proportional to 103,828.13, 155,755.10 and 40,640.03

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Solution

The fourth proportional to 103,828.13, 155,755.10 and 40,640.03 is: 60,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,828.13 : 155,755.10 = 40,640.03 : x
  2. Step 2: Convert to fraction form
    103,828.13/155,755.10 = 40,640.03/x
  3. Step 3: Cross multiply
    103,828.13x = 155,755.10 × 40,640.03
  4. Step 4: Simplify right side
    103,828.13x = 6,329,891,843.56
  5. Step 5: Solve for x
    x = 6,329,891,843.56/103,828.13
  6. Step 6: Final answer
    x = 60,965.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.