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Finding the Fourth Proportional to 54,661.60, 81,862.80 and 33,666.40

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Solution

The fourth proportional to 54,661.60, 81,862.80 and 33,666.40 is: 50,419.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,661.60 : 81,862.80 = 33,666.40 : x
  2. Step 2: Convert to fraction form
    54,661.60/81,862.80 = 33,666.40/x
  3. Step 3: Cross multiply
    54,661.60x = 81,862.80 × 33,666.40
  4. Step 4: Simplify right side
    54,661.60x = 2,756,025,769.92
  5. Step 5: Solve for x
    x = 2,756,025,769.92/54,661.60
  6. Step 6: Final answer
    x = 50,419.78

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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.