Home / 42,781.30-64,167.03-11,194.40

Finding the Fourth Proportional to 42,781.30, 64,167.03 and 11,194.40

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Solution

The fourth proportional to 42,781.30, 64,167.03 and 11,194.40 is: 16,790.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,781.30 : 64,167.03 = 11,194.40 : x
  2. Step 2: Convert to fraction form
    42,781.30/64,167.03 = 11,194.40/x
  3. Step 3: Cross multiply
    42,781.30x = 64,167.03 × 11,194.40
  4. Step 4: Simplify right side
    42,781.30x = 718,311,561.05
  5. Step 5: Solve for x
    x = 718,311,561.05/42,781.30
  6. Step 6: Final answer
    x = 16,790.32

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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.