Home / 42,543.07-63,809.77-11,380.75

Finding the Fourth Proportional to 42,543.07, 63,809.77 and 11,380.75

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Solution

The fourth proportional to 42,543.07, 63,809.77 and 11,380.75 is: 17,069.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,543.07 : 63,809.77 = 11,380.75 : x
  2. Step 2: Convert to fraction form
    42,543.07/63,809.77 = 11,380.75/x
  3. Step 3: Cross multiply
    42,543.07x = 63,809.77 × 11,380.75
  4. Step 4: Simplify right side
    42,543.07x = 726,203,039.93
  5. Step 5: Solve for x
    x = 726,203,039.93/42,543.07
  6. Step 6: Final answer
    x = 17,069.83

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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.