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Finding the Fourth Proportional to 79,885,387.80, 119,828,081.70 and 41,143,338.90

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Solution

The fourth proportional to 79,885,387.80, 119,828,081.70 and 41,143,338.90 is: 61,715,008.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,885,387.80 : 119,828,081.70 = 41,143,338.90 : x
  2. Step 2: Convert to fraction form
    79,885,387.80/119,828,081.70 = 41,143,338.90/x
  3. Step 3: Cross multiply
    79,885,387.80x = 119,828,081.70 × 41,143,338.90
  4. Step 4: Simplify right side
    79,885,387.80x = 4,930,127,375,119,988
  5. Step 5: Solve for x
    x = 4,930,127,375,119,988/79,885,387.80
  6. Step 6: Final answer
    x = 61,715,008.35

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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.