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Finding the Fourth Proportional to 54,354.30, 81,531.45 and 43,200.60

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Solution

The fourth proportional to 54,354.30, 81,531.45 and 43,200.60 is: 64,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,354.30 : 81,531.45 = 43,200.60 : x
  2. Step 2: Convert to fraction form
    54,354.30/81,531.45 = 43,200.60/x
  3. Step 3: Cross multiply
    54,354.30x = 81,531.45 × 43,200.60
  4. Step 4: Simplify right side
    54,354.30x = 3,522,207,558.87
  5. Step 5: Solve for x
    x = 3,522,207,558.87/54,354.30
  6. Step 6: Final answer
    x = 64,800.90

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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.