Home / 73,428.38-110,142.65-20,120.81

Finding the Fourth Proportional to 73,428.38, 110,142.65 and 20,120.81

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Solution

The fourth proportional to 73,428.38, 110,142.65 and 20,120.81 is: 30,181.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,428.38 : 110,142.65 = 20,120.81 : x
  2. Step 2: Convert to fraction form
    73,428.38/110,142.65 = 20,120.81/x
  3. Step 3: Cross multiply
    73,428.38x = 110,142.65 × 20,120.81
  4. Step 4: Simplify right side
    73,428.38x = 2,216,158,682.23
  5. Step 5: Solve for x
    x = 2,216,158,682.23/73,428.38
  6. Step 6: Final answer
    x = 30,181.23

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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.