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Finding the Fourth Proportional to 85,464.62, 128,242.83 and 35,579.15

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Solution

The fourth proportional to 85,464.62, 128,242.83 and 35,579.15 is: 53,387.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,464.62 : 128,242.83 = 35,579.15 : x
  2. Step 2: Convert to fraction form
    85,464.62/128,242.83 = 35,579.15/x
  3. Step 3: Cross multiply
    85,464.62x = 128,242.83 × 35,579.15
  4. Step 4: Simplify right side
    85,464.62x = 4,562,770,884.99
  5. Step 5: Solve for x
    x = 4,562,770,884.99/85,464.62
  6. Step 6: Final answer
    x = 53,387.83

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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.