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Finding the Fourth Proportional to 18,602,367.76, 27,904,076.52 and 5,139,195.76

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Solution

The fourth proportional to 18,602,367.76, 27,904,076.52 and 5,139,195.76 is: 7,708,938.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602,367.76 : 27,904,076.52 = 5,139,195.76 : x
  2. Step 2: Convert to fraction form
    18,602,367.76/27,904,076.52 = 5,139,195.76/x
  3. Step 3: Cross multiply
    18,602,367.76x = 27,904,076.52 × 5,139,195.76
  4. Step 4: Simplify right side
    18,602,367.76x = 143,404,511,573,083.19
  5. Step 5: Solve for x
    x = 143,404,511,573,083.19/18,602,367.76
  6. Step 6: Final answer
    x = 7,708,938.64

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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.