Home / 73,129.26-109,693.38-20,538.81

Finding the Fourth Proportional to 73,129.26, 109,693.38 and 20,538.81

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Solution

The fourth proportional to 73,129.26, 109,693.38 and 20,538.81 is: 30,808.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,129.26 : 109,693.38 = 20,538.81 : x
  2. Step 2: Convert to fraction form
    73,129.26/109,693.38 = 20,538.81/x
  3. Step 3: Cross multiply
    73,129.26x = 109,693.38 × 20,538.81
  4. Step 4: Simplify right side
    73,129.26x = 2,252,971,490.08
  5. Step 5: Solve for x
    x = 2,252,971,490.08/73,129.26
  6. Step 6: Final answer
    x = 30,808.07

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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.