Home / 74,769.32-112,121.18-27,989.39

Finding the Fourth Proportional to 74,769.32, 112,121.18 and 27,989.39

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Solution

The fourth proportional to 74,769.32, 112,121.18 and 27,989.39 is: 41,971.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,769.32 : 112,121.18 = 27,989.39 : x
  2. Step 2: Convert to fraction form
    74,769.32/112,121.18 = 27,989.39/x
  3. Step 3: Cross multiply
    74,769.32x = 112,121.18 × 27,989.39
  4. Step 4: Simplify right side
    74,769.32x = 3,138,203,574.64
  5. Step 5: Solve for x
    x = 3,138,203,574.64/74,769.32
  6. Step 6: Final answer
    x = 41,971.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.