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Finding the Fourth Proportional to 81,785,080.80, 122,573,422.80 and 43,464,952.80

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Solution

The fourth proportional to 81,785,080.80, 122,573,422.80 and 43,464,952.80 is: 65,142,052.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,785,080.80 : 122,573,422.80 = 43,464,952.80 : x
  2. Step 2: Convert to fraction form
    81,785,080.80/122,573,422.80 = 43,464,952.80/x
  3. Step 3: Cross multiply
    81,785,080.80x = 122,573,422.80 × 43,464,952.80
  4. Step 4: Simplify right side
    81,785,080.80x = 5,327,648,036,536,443
  5. Step 5: Solve for x
    x = 5,327,648,036,536,443/81,785,080.80
  6. Step 6: Final answer
    x = 65,142,052.61

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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.