Home / 74,369.12-102,629.43-40,377.56

Finding the Fourth Proportional to 74,369.12, 102,629.43 and 40,377.56

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Solution

The fourth proportional to 74,369.12, 102,629.43 and 40,377.56 is: 55,721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,369.12 : 102,629.43 = 40,377.56 : x
  2. Step 2: Convert to fraction form
    74,369.12/102,629.43 = 40,377.56/x
  3. Step 3: Cross multiply
    74,369.12x = 102,629.43 × 40,377.56
  4. Step 4: Simplify right side
    74,369.12x = 4,143,925,454.44
  5. Step 5: Solve for x
    x = 4,143,925,454.44/74,369.12
  6. Step 6: Final answer
    x = 55,721.05

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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.