Home / 74,171.57-102,357.07-40,180.12

Finding the Fourth Proportional to 74,171.57, 102,357.07 and 40,180.12

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Solution

The fourth proportional to 74,171.57, 102,357.07 and 40,180.12 is: 55,448.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,171.57 : 102,357.07 = 40,180.12 : x
  2. Step 2: Convert to fraction form
    74,171.57/102,357.07 = 40,180.12/x
  3. Step 3: Cross multiply
    74,171.57x = 102,357.07 × 40,180.12
  4. Step 4: Simplify right side
    74,171.57x = 4,112,718,999.11
  5. Step 5: Solve for x
    x = 4,112,718,999.11/74,171.57
  6. Step 6: Final answer
    x = 55,448.73

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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.