Home / 85,418.43-128,131.10-32,104.85

Finding the Fourth Proportional to 85,418.43, 128,131.10 and 32,104.85

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Solution

The fourth proportional to 85,418.43, 128,131.10 and 32,104.85 is: 48,158.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,418.43 : 128,131.10 = 32,104.85 : x
  2. Step 2: Convert to fraction form
    85,418.43/128,131.10 = 32,104.85/x
  3. Step 3: Cross multiply
    85,418.43x = 128,131.10 × 32,104.85
  4. Step 4: Simplify right side
    85,418.43x = 4,113,628,944.66
  5. Step 5: Solve for x
    x = 4,113,628,944.66/85,418.43
  6. Step 6: Final answer
    x = 48,158.56

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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.