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Finding the Fourth Proportional to 72,584,080.20, 108,876,120.30 and 36,304,374.60

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Solution

The fourth proportional to 72,584,080.20, 108,876,120.30 and 36,304,374.60 is: 54,456,561.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,584,080.20 : 108,876,120.30 = 36,304,374.60 : x
  2. Step 2: Convert to fraction form
    72,584,080.20/108,876,120.30 = 36,304,374.60/x
  3. Step 3: Cross multiply
    72,584,080.20x = 108,876,120.30 × 36,304,374.60
  4. Step 4: Simplify right side
    72,584,080.20x = 3,952,679,456,365,864.50
  5. Step 5: Solve for x
    x = 3,952,679,456,365,864.50/72,584,080.20
  6. Step 6: Final answer
    x = 54,456,561.90

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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.