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Finding the Fourth Proportional to 72,608,977.80, 108,910,842.30 and 29,476,963.80

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Solution

The fourth proportional to 72,608,977.80, 108,910,842.30 and 29,476,963.80 is: 44,214,380.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,608,977.80 : 108,910,842.30 = 29,476,963.80 : x
  2. Step 2: Convert to fraction form
    72,608,977.80/108,910,842.30 = 29,476,963.80/x
  3. Step 3: Cross multiply
    72,608,977.80x = 108,910,842.30 × 29,476,963.80
  4. Step 4: Simplify right side
    72,608,977.80x = 3,210,360,955,904,608.50
  5. Step 5: Solve for x
    x = 3,210,360,955,904,608.50/72,608,977.80
  6. Step 6: Final answer
    x = 44,214,380.28

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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.