Home / 54,432.36-81,653.70-21,155.00

Finding the Fourth Proportional to 54,432.36, 81,653.70 and 21,155.00

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Solution

The fourth proportional to 54,432.36, 81,653.70 and 21,155.00 is: 31,734.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,432.36 : 81,653.70 = 21,155.00 : x
  2. Step 2: Convert to fraction form
    54,432.36/81,653.70 = 21,155.00/x
  3. Step 3: Cross multiply
    54,432.36x = 81,653.70 × 21,155.00
  4. Step 4: Simplify right side
    54,432.36x = 1,727,383,694.56
  5. Step 5: Solve for x
    x = 1,727,383,694.56/54,432.36
  6. Step 6: Final answer
    x = 31,734.50

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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.