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Finding the Fourth Proportional to 17,375,079.60, 26,071,950.60 and 7,278,721.20

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Solution

The fourth proportional to 17,375,079.60, 26,071,950.60 and 7,278,721.20 is: 10,921,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,375,079.60 : 26,071,950.60 = 7,278,721.20 : x
  2. Step 2: Convert to fraction form
    17,375,079.60/26,071,950.60 = 7,278,721.20/x
  3. Step 3: Cross multiply
    17,375,079.60x = 26,071,950.60 × 7,278,721.20
  4. Step 4: Simplify right side
    17,375,079.60x = 189,770,459,557,572.75
  5. Step 5: Solve for x
    x = 189,770,459,557,572.75/17,375,079.60
  6. Step 6: Final answer
    x = 10,921,990.80

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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.