Home / 74,163.97-102,346.34-40,172.52

Finding the Fourth Proportional to 74,163.97, 102,346.34 and 40,172.52

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Solution

The fourth proportional to 74,163.97, 102,346.34 and 40,172.52 is: 55,438.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,163.97 : 102,346.34 = 40,172.52 : x
  2. Step 2: Convert to fraction form
    74,163.97/102,346.34 = 40,172.52/x
  3. Step 3: Cross multiply
    74,163.97x = 102,346.34 × 40,172.52
  4. Step 4: Simplify right side
    74,163.97x = 4,111,510,573.51
  5. Step 5: Solve for x
    x = 4,111,510,573.51/74,163.97
  6. Step 6: Final answer
    x = 55,438.11

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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.