Home / 73,318.08-109,984.16-20,729.28

Finding the Fourth Proportional to 73,318.08, 109,984.16 and 20,729.28

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Solution

The fourth proportional to 73,318.08, 109,984.16 and 20,729.28 is: 31,095.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,318.08 : 109,984.16 = 20,729.28 : x
  2. Step 2: Convert to fraction form
    73,318.08/109,984.16 = 20,729.28/x
  3. Step 3: Cross multiply
    73,318.08x = 109,984.16 × 20,729.28
  4. Step 4: Simplify right side
    73,318.08x = 2,279,892,448.20
  5. Step 5: Solve for x
    x = 2,279,892,448.20/73,318.08
  6. Step 6: Final answer
    x = 31,095.91

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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.