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Finding the Fourth Proportional to 54,158.96, 81,238.44 and 20,894.60

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Solution

The fourth proportional to 54,158.96, 81,238.44 and 20,894.60 is: 31,341.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,158.96 : 81,238.44 = 20,894.60 : x
  2. Step 2: Convert to fraction form
    54,158.96/81,238.44 = 20,894.60/x
  3. Step 3: Cross multiply
    54,158.96x = 81,238.44 × 20,894.60
  4. Step 4: Simplify right side
    54,158.96x = 1,697,444,708.42
  5. Step 5: Solve for x
    x = 1,697,444,708.42/54,158.96
  6. Step 6: Final answer
    x = 31,341.90

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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.