Home / 85,420,285,908.89-128,040,736,157.17-28,740,472,570.13

Finding the Fourth Proportional to 85,420,285,908.89, 128,040,736,157.17 and 28,740,472,570.13

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Solution

The fourth proportional to 85,420,285,908.89, 128,040,736,157.17 and 28,740,472,570.13 is: 43,080,530,885.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,420,285,908.89 : 128,040,736,157.17 = 28,740,472,570.13 : x
  2. Step 2: Convert to fraction form
    85,420,285,908.89/128,040,736,157.17 = 28,740,472,570.13/x
  3. Step 3: Cross multiply
    85,420,285,908.89x = 128,040,736,157.17 × 28,740,472,570.13
  4. Step 4: Simplify right side
    85,420,285,908.89x = 3,679,951,265,383,756,857,344
  5. Step 5: Solve for x
    x = 3,679,951,265,383,756,857,344/85,420,285,908.89
  6. Step 6: Final answer
    x = 43,080,530,885.94

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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.