Home / 42,120.06-63,145.80-17,171.70

Finding the Fourth Proportional to 42,120.06, 63,145.80 and 17,171.70

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Solution

The fourth proportional to 42,120.06, 63,145.80 and 17,171.70 is: 25,743.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,120.06 : 63,145.80 = 17,171.70 : x
  2. Step 2: Convert to fraction form
    42,120.06/63,145.80 = 17,171.70/x
  3. Step 3: Cross multiply
    42,120.06x = 63,145.80 × 17,171.70
  4. Step 4: Simplify right side
    42,120.06x = 1,084,320,733.86
  5. Step 5: Solve for x
    x = 1,084,320,733.86/42,120.06
  6. Step 6: Final answer
    x = 25,743.57

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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.