Home / 54,019.52-81,023.20-20,716.21

Finding the Fourth Proportional to 54,019.52, 81,023.20 and 20,716.21

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Solution

The fourth proportional to 54,019.52, 81,023.20 and 20,716.21 is: 31,071.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,019.52 : 81,023.20 = 20,716.21 : x
  2. Step 2: Convert to fraction form
    54,019.52/81,023.20 = 20,716.21/x
  3. Step 3: Cross multiply
    54,019.52x = 81,023.20 × 20,716.21
  4. Step 4: Simplify right side
    54,019.52x = 1,678,493,854.53
  5. Step 5: Solve for x
    x = 1,678,493,854.53/54,019.52
  6. Step 6: Final answer
    x = 31,071.99

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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.