Home / 80,801.11-121,256.97-28,210.60

Finding the Fourth Proportional to 80,801.11, 121,256.97 and 28,210.60

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Solution

The fourth proportional to 80,801.11, 121,256.97 and 28,210.60 is: 42,335.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,801.11 : 121,256.97 = 28,210.60 : x
  2. Step 2: Convert to fraction form
    80,801.11/121,256.97 = 28,210.60/x
  3. Step 3: Cross multiply
    80,801.11x = 121,256.97 × 28,210.60
  4. Step 4: Simplify right side
    80,801.11x = 3,420,731,877.88
  5. Step 5: Solve for x
    x = 3,420,731,877.88/80,801.11
  6. Step 6: Final answer
    x = 42,335.21

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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.