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Finding the Fourth Proportional to 56,979,412.80, 85,469,119.20 and 51,306,043.20

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Solution

The fourth proportional to 56,979,412.80, 85,469,119.20 and 51,306,043.20 is: 76,959,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,979,412.80 : 85,469,119.20 = 51,306,043.20 : x
  2. Step 2: Convert to fraction form
    56,979,412.80/85,469,119.20 = 51,306,043.20/x
  3. Step 3: Cross multiply
    56,979,412.80x = 85,469,119.20 × 51,306,043.20
  4. Step 4: Simplify right side
    56,979,412.80x = 4,385,082,321,941,150
  5. Step 5: Solve for x
    x = 4,385,082,321,941,150/56,979,412.80
  6. Step 6: Final answer
    x = 76,959,064.80

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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.