Home / 80,570.55-120,858.21-38,455.07

Finding the Fourth Proportional to 80,570.55, 120,858.21 and 38,455.07

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Solution

The fourth proportional to 80,570.55, 120,858.21 and 38,455.07 is: 57,683.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,570.55 : 120,858.21 = 38,455.07 : x
  2. Step 2: Convert to fraction form
    80,570.55/120,858.21 = 38,455.07/x
  3. Step 3: Cross multiply
    80,570.55x = 120,858.21 × 38,455.07
  4. Step 4: Simplify right side
    80,570.55x = 4,647,610,321.33
  5. Step 5: Solve for x
    x = 4,647,610,321.33/80,570.55
  6. Step 6: Final answer
    x = 57,683.74

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1.5x scale

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.