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Finding the Fourth Proportional to 54,954.60, 82,431.90 and 50,143.20

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Solution

The fourth proportional to 54,954.60, 82,431.90 and 50,143.20 is: 75,214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,954.60 : 82,431.90 = 50,143.20 : x
  2. Step 2: Convert to fraction form
    54,954.60/82,431.90 = 50,143.20/x
  3. Step 3: Cross multiply
    54,954.60x = 82,431.90 × 50,143.20
  4. Step 4: Simplify right side
    54,954.60x = 4,133,399,248.08
  5. Step 5: Solve for x
    x = 4,133,399,248.08/54,954.60
  6. Step 6: Final answer
    x = 75,214.80

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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.