Home / 85,850.12-128,699.28-32,505.04

Finding the Fourth Proportional to 85,850.12, 128,699.28 and 32,505.04

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Solution

The fourth proportional to 85,850.12, 128,699.28 and 32,505.04 is: 48,728.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,850.12 : 128,699.28 = 32,505.04 : x
  2. Step 2: Convert to fraction form
    85,850.12/128,699.28 = 32,505.04/x
  3. Step 3: Cross multiply
    85,850.12x = 128,699.28 × 32,505.04
  4. Step 4: Simplify right side
    85,850.12x = 4,183,375,244.37
  5. Step 5: Solve for x
    x = 4,183,375,244.37/85,850.12
  6. Step 6: Final answer
    x = 48,728.82

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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.