Home / 81,512,614-122,233,054.20-43,165,179.28

Finding the Fourth Proportional to 81,512,614, 122,233,054.20 and 43,165,179.28

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Solution

The fourth proportional to 81,512,614, 122,233,054.20 and 43,165,179.28 is: 64,728,775.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,512,614 : 122,233,054.20 = 43,165,179.28 : x
  2. Step 2: Convert to fraction form
    81,512,614/122,233,054.20 = 43,165,179.28/x
  3. Step 3: Cross multiply
    81,512,614x = 122,233,054.20 × 43,165,179.28
  4. Step 4: Simplify right side
    81,512,614x = 5,276,211,698,484,957
  5. Step 5: Solve for x
    x = 5,276,211,698,484,957/81,512,614
  6. Step 6: Final answer
    x = 64,728,775.58

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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.