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Finding the Fourth Proportional to 54,203.20, 81,499.20 and 45,649.60

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Solution

The fourth proportional to 54,203.20, 81,499.20 and 45,649.60 is: 68,638.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,203.20 : 81,499.20 = 45,649.60 : x
  2. Step 2: Convert to fraction form
    54,203.20/81,499.20 = 45,649.60/x
  3. Step 3: Cross multiply
    54,203.20x = 81,499.20 × 45,649.60
  4. Step 4: Simplify right side
    54,203.20x = 3,720,405,880.32
  5. Step 5: Solve for x
    x = 3,720,405,880.32/54,203.20
  6. Step 6: Final answer
    x = 68,638.12

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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.