Home / 79,708.72-119,570.40-20,544.60

Finding the Fourth Proportional to 79,708.72, 119,570.40 and 20,544.60

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Solution

The fourth proportional to 79,708.72, 119,570.40 and 20,544.60 is: 30,818.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,708.72 : 119,570.40 = 20,544.60 : x
  2. Step 2: Convert to fraction form
    79,708.72/119,570.40 = 20,544.60/x
  3. Step 3: Cross multiply
    79,708.72x = 119,570.40 × 20,544.60
  4. Step 4: Simplify right side
    79,708.72x = 2,456,526,039.84
  5. Step 5: Solve for x
    x = 2,456,526,039.84/79,708.72
  6. Step 6: Final answer
    x = 30,818.79

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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.