Home / 54,432.87-81,654.45-21,155.49

Finding the Fourth Proportional to 54,432.87, 81,654.45 and 21,155.49

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Solution

The fourth proportional to 54,432.87, 81,654.45 and 21,155.49 is: 31,735.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,432.87 : 81,654.45 = 21,155.49 : x
  2. Step 2: Convert to fraction form
    54,432.87/81,654.45 = 21,155.49/x
  3. Step 3: Cross multiply
    54,432.87x = 81,654.45 × 21,155.49
  4. Step 4: Simplify right side
    54,432.87x = 1,727,439,900.43
  5. Step 5: Solve for x
    x = 1,727,439,900.43/54,432.87
  6. Step 6: Final answer
    x = 31,735.23

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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.