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Finding the Fourth Proportional to 79,487,998.80, 119,231,998.20 and 55,175,557.20

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Solution

The fourth proportional to 79,487,998.80, 119,231,998.20 and 55,175,557.20 is: 82,763,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,487,998.80 : 119,231,998.20 = 55,175,557.20 : x
  2. Step 2: Convert to fraction form
    79,487,998.80/119,231,998.20 = 55,175,557.20/x
  3. Step 3: Cross multiply
    79,487,998.80x = 119,231,998.20 × 55,175,557.20
  4. Step 4: Simplify right side
    79,487,998.80x = 6,578,691,936,754,398
  5. Step 5: Solve for x
    x = 6,578,691,936,754,398/79,487,998.80
  6. Step 6: Final answer
    x = 82,763,335.80

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1.5x scale

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.