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Finding the Fourth Proportional to 54,311.80, 81,467.70 and 35,649.40

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Solution

The fourth proportional to 54,311.80, 81,467.70 and 35,649.40 is: 53,474.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,311.80 : 81,467.70 = 35,649.40 : x
  2. Step 2: Convert to fraction form
    54,311.80/81,467.70 = 35,649.40/x
  3. Step 3: Cross multiply
    54,311.80x = 81,467.70 × 35,649.40
  4. Step 4: Simplify right side
    54,311.80x = 2,904,274,624.38
  5. Step 5: Solve for x
    x = 2,904,274,624.38/54,311.80
  6. Step 6: Final answer
    x = 53,474.10

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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.