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Finding the Fourth Proportional to 71,866,807.70, 107,800,211.55 and 20,051,310.20

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Solution

The fourth proportional to 71,866,807.70, 107,800,211.55 and 20,051,310.20 is: 30,076,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,866,807.70 : 107,800,211.55 = 20,051,310.20 : x
  2. Step 2: Convert to fraction form
    71,866,807.70/107,800,211.55 = 20,051,310.20/x
  3. Step 3: Cross multiply
    71,866,807.70x = 107,800,211.55 × 20,051,310.20
  4. Step 4: Simplify right side
    71,866,807.70x = 2,161,535,481,414,672.75
  5. Step 5: Solve for x
    x = 2,161,535,481,414,672.75/71,866,807.70
  6. Step 6: Final answer
    x = 30,076,965.30

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Similar ratio
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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.