Home / 73,139.08-109,708.62-20,549.02

Finding the Fourth Proportional to 73,139.08, 109,708.62 and 20,549.02

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Solution

The fourth proportional to 73,139.08, 109,708.62 and 20,549.02 is: 30,823.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,139.08 : 109,708.62 = 20,549.02 : x
  2. Step 2: Convert to fraction form
    73,139.08/109,708.62 = 20,549.02/x
  3. Step 3: Cross multiply
    73,139.08x = 109,708.62 × 20,549.02
  4. Step 4: Simplify right side
    73,139.08x = 2,254,404,626.55
  5. Step 5: Solve for x
    x = 2,254,404,626.55/73,139.08
  6. Step 6: Final answer
    x = 30,823.53

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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.