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Finding the Fourth Proportional to 20,719,773.60, 31,079,660.40 and 19,544,042.40

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Solution

The fourth proportional to 20,719,773.60, 31,079,660.40 and 19,544,042.40 is: 29,316,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719,773.60 : 31,079,660.40 = 19,544,042.40 : x
  2. Step 2: Convert to fraction form
    20,719,773.60/31,079,660.40 = 19,544,042.40/x
  3. Step 3: Cross multiply
    20,719,773.60x = 31,079,660.40 × 19,544,042.40
  4. Step 4: Simplify right side
    20,719,773.60x = 607,422,200,635,200.88
  5. Step 5: Solve for x
    x = 607,422,200,635,200.88/20,719,773.60
  6. Step 6: Final answer
    x = 29,316,063.60

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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.