Home / 54,212.20-81,159.90-38,660.20

Finding the Fourth Proportional to 54,212.20, 81,159.90 and 38,660.20

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Solution

The fourth proportional to 54,212.20, 81,159.90 and 38,660.20 is: 57,877.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,212.20 : 81,159.90 = 38,660.20 : x
  2. Step 2: Convert to fraction form
    54,212.20/81,159.90 = 38,660.20/x
  3. Step 3: Cross multiply
    54,212.20x = 81,159.90 × 38,660.20
  4. Step 4: Simplify right side
    54,212.20x = 3,137,657,965.98
  5. Step 5: Solve for x
    x = 3,137,657,965.98/54,212.20
  6. Step 6: Final answer
    x = 57,877.34

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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.