Home / 72,085,137,344.57-108,117,180,797.89-21,019,711,833.79

Finding the Fourth Proportional to 72,085,137,344.57, 108,117,180,797.89 and 21,019,711,833.79

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Solution

The fourth proportional to 72,085,137,344.57, 108,117,180,797.89 and 21,019,711,833.79 is: 31,526,498,642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,085,137,344.57 : 108,117,180,797.89 = 21,019,711,833.79 : x
  2. Step 2: Convert to fraction form
    72,085,137,344.57/108,117,180,797.89 = 21,019,711,833.79/x
  3. Step 3: Cross multiply
    72,085,137,344.57x = 108,117,180,797.89 × 21,019,711,833.79
  4. Step 4: Simplify right side
    72,085,137,344.57x = 2,272,591,984,653,096,976,384
  5. Step 5: Solve for x
    x = 2,272,591,984,653,096,976,384/72,085,137,344.57
  6. Step 6: Final answer
    x = 31,526,498,642.71

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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.