Home / 74,111.04-102,273.39-40,119.78

Finding the Fourth Proportional to 74,111.04, 102,273.39 and 40,119.78

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Solution

The fourth proportional to 74,111.04, 102,273.39 and 40,119.78 is: 55,365.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,111.04 : 102,273.39 = 40,119.78 : x
  2. Step 2: Convert to fraction form
    74,111.04/102,273.39 = 40,119.78/x
  3. Step 3: Cross multiply
    74,111.04x = 102,273.39 × 40,119.78
  4. Step 4: Simplify right side
    74,111.04x = 4,103,185,906.65
  5. Step 5: Solve for x
    x = 4,103,185,906.65/74,111.04
  6. Step 6: Final answer
    x = 55,365.38

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1.5x scale

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.