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Finding the Fourth Proportional to 54,978,059.90, 75,867,644.01 and 30,533,348.54

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Solution

The fourth proportional to 54,978,059.90, 75,867,644.01 and 30,533,348.54 is: 42,134,866.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,978,059.90 : 75,867,644.01 = 30,533,348.54 : x
  2. Step 2: Convert to fraction form
    54,978,059.90/75,867,644.01 = 30,533,348.54/x
  3. Step 3: Cross multiply
    54,978,059.90x = 75,867,644.01 × 30,533,348.54
  4. Step 4: Simplify right side
    54,978,059.90x = 2,316,493,217,770,142.50
  5. Step 5: Solve for x
    x = 2,316,493,217,770,142.50/54,978,059.90
  6. Step 6: Final answer
    x = 42,134,866.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.