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Finding the Fourth Proportional to 79,910,080.80, 119,865,121.20 and 54,082,048.20

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Solution

The fourth proportional to 79,910,080.80, 119,865,121.20 and 54,082,048.20 is: 81,123,072.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,910,080.80 : 119,865,121.20 = 54,082,048.20 : x
  2. Step 2: Convert to fraction form
    79,910,080.80/119,865,121.20 = 54,082,048.20/x
  3. Step 3: Cross multiply
    79,910,080.80x = 119,865,121.20 × 54,082,048.20
  4. Step 4: Simplify right side
    79,910,080.80x = 6,482,551,262,237,242
  5. Step 5: Solve for x
    x = 6,482,551,262,237,242/79,910,080.80
  6. Step 6: Final answer
    x = 81,123,072.30

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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.