Home / 74,172.11-102,357.42-40,180.74

Finding the Fourth Proportional to 74,172.11, 102,357.42 and 40,180.74

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Solution

The fourth proportional to 74,172.11, 102,357.42 and 40,180.74 is: 55,449.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,172.11 : 102,357.42 = 40,180.74 : x
  2. Step 2: Convert to fraction form
    74,172.11/102,357.42 = 40,180.74/x
  3. Step 3: Cross multiply
    74,172.11x = 102,357.42 × 40,180.74
  4. Step 4: Simplify right side
    74,172.11x = 4,112,796,980.54
  5. Step 5: Solve for x
    x = 4,112,796,980.54/74,172.11
  6. Step 6: Final answer
    x = 55,449.37

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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.