Home / 54,142.68-81,215.08-18,603.62

Finding the Fourth Proportional to 54,142.68, 81,215.08 and 18,603.62

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Solution

The fourth proportional to 54,142.68, 81,215.08 and 18,603.62 is: 27,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,142.68 : 81,215.08 = 18,603.62 : x
  2. Step 2: Convert to fraction form
    54,142.68/81,215.08 = 18,603.62/x
  3. Step 3: Cross multiply
    54,142.68x = 81,215.08 × 18,603.62
  4. Step 4: Simplify right side
    54,142.68x = 1,510,894,847.72
  5. Step 5: Solve for x
    x = 1,510,894,847.72/54,142.68
  6. Step 6: Final answer
    x = 27,905.80

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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.