Home / 74,298.87-111,481.29-30,012.12

Finding the Fourth Proportional to 74,298.87, 111,481.29 and 30,012.12

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Solution

The fourth proportional to 74,298.87, 111,481.29 and 30,012.12 is: 45,031.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,298.87 : 111,481.29 = 30,012.12 : x
  2. Step 2: Convert to fraction form
    74,298.87/111,481.29 = 30,012.12/x
  3. Step 3: Cross multiply
    74,298.87x = 111,481.29 × 30,012.12
  4. Step 4: Simplify right side
    74,298.87x = 3,345,789,853.23
  5. Step 5: Solve for x
    x = 3,345,789,853.23/74,298.87
  6. Step 6: Final answer
    x = 45,031.50

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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.