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Finding the Fourth Proportional to 54,039.60, 81,010.80 and 35,328.60

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Solution

The fourth proportional to 54,039.60, 81,010.80 and 35,328.60 is: 52,961.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,039.60 : 81,010.80 = 35,328.60 : x
  2. Step 2: Convert to fraction form
    54,039.60/81,010.80 = 35,328.60/x
  3. Step 3: Cross multiply
    54,039.60x = 81,010.80 × 35,328.60
  4. Step 4: Simplify right side
    54,039.60x = 2,861,998,148.88
  5. Step 5: Solve for x
    x = 2,861,998,148.88/54,039.60
  6. Step 6: Final answer
    x = 52,961.13

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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.