Home / 81,484,658,832.87-122,226,959,481.39-21,791,769,665.82

Finding the Fourth Proportional to 81,484,658,832.87, 122,226,959,481.39 and 21,791,769,665.82

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Solution

The fourth proportional to 81,484,658,832.87, 122,226,959,481.39 and 21,791,769,665.82 is: 32,687,646,805.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,484,658,832.87 : 122,226,959,481.39 = 21,791,769,665.82 : x
  2. Step 2: Convert to fraction form
    81,484,658,832.87/122,226,959,481.39 = 21,791,769,665.82/x
  3. Step 3: Cross multiply
    81,484,658,832.87x = 122,226,959,481.39 × 21,791,769,665.82
  4. Step 4: Simplify right side
    81,484,658,832.87x = 2,663,541,747,971,964,534,784
  5. Step 5: Solve for x
    x = 2,663,541,747,971,964,534,784/81,484,658,832.87
  6. Step 6: Final answer
    x = 32,687,646,805.21

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1.5x scale

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.