Home / 80,780.13-121,170.24-38,650.26

Finding the Fourth Proportional to 80,780.13, 121,170.24 and 38,650.26

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Solution

The fourth proportional to 80,780.13, 121,170.24 and 38,650.26 is: 57,975.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,780.13 : 121,170.24 = 38,650.26 : x
  2. Step 2: Convert to fraction form
    80,780.13/121,170.24 = 38,650.26/x
  3. Step 3: Cross multiply
    80,780.13x = 121,170.24 × 38,650.26
  4. Step 4: Simplify right side
    80,780.13x = 4,683,261,280.26
  5. Step 5: Solve for x
    x = 4,683,261,280.26/80,780.13
  6. Step 6: Final answer
    x = 57,975.41

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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.