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Finding the Fourth Proportional to 79,893,001.80, 119,839,502.70 and 76,757,718.60

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Solution

The fourth proportional to 79,893,001.80, 119,839,502.70 and 76,757,718.60 is: 115,136,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,893,001.80 : 119,839,502.70 = 76,757,718.60 : x
  2. Step 2: Convert to fraction form
    79,893,001.80/119,839,502.70 = 76,757,718.60/x
  3. Step 3: Cross multiply
    79,893,001.80x = 119,839,502.70 × 76,757,718.60
  4. Step 4: Simplify right side
    79,893,001.80x = 9,198,606,825,410,540
  5. Step 5: Solve for x
    x = 9,198,606,825,410,540/79,893,001.80
  6. Step 6: Final answer
    x = 115,136,577.90

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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.