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Finding the Fourth Proportional to 53,304,042.06, 79,921,420.20 and 20,959,099.38

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Solution

The fourth proportional to 53,304,042.06, 79,921,420.20 and 20,959,099.38 is: 31,425,027.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,304,042.06 : 79,921,420.20 = 20,959,099.38 : x
  2. Step 2: Convert to fraction form
    53,304,042.06/79,921,420.20 = 20,959,099.38/x
  3. Step 3: Cross multiply
    53,304,042.06x = 79,921,420.20 × 20,959,099.38
  4. Step 4: Simplify right side
    53,304,042.06x = 1,675,080,988,562,539.50
  5. Step 5: Solve for x
    x = 1,675,080,988,562,539.50/53,304,042.06
  6. Step 6: Final answer
    x = 31,425,027.52

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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.