Home / 54,047.12-81,015.24-20,758.20

Finding the Fourth Proportional to 54,047.12, 81,015.24 and 20,758.20

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Solution

The fourth proportional to 54,047.12, 81,015.24 and 20,758.20 is: 31,116.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,047.12 : 81,015.24 = 20,758.20 : x
  2. Step 2: Convert to fraction form
    54,047.12/81,015.24 = 20,758.20/x
  3. Step 3: Cross multiply
    54,047.12x = 81,015.24 × 20,758.20
  4. Step 4: Simplify right side
    54,047.12x = 1,681,730,554.97
  5. Step 5: Solve for x
    x = 1,681,730,554.97/54,047.12
  6. Step 6: Final answer
    x = 31,116.01

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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.