Home / 74,112.27-111,166.79-21,519.51

Finding the Fourth Proportional to 74,112.27, 111,166.79 and 21,519.51

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Solution

The fourth proportional to 74,112.27, 111,166.79 and 21,519.51 is: 32,278.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,112.27 : 111,166.79 = 21,519.51 : x
  2. Step 2: Convert to fraction form
    74,112.27/111,166.79 = 21,519.51/x
  3. Step 3: Cross multiply
    74,112.27x = 111,166.79 × 21,519.51
  4. Step 4: Simplify right side
    74,112.27x = 2,392,254,741.48
  5. Step 5: Solve for x
    x = 2,392,254,741.48/74,112.27
  6. Step 6: Final answer
    x = 32,278.79

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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.