Home / 81,577.05-122,203.58-71,835.45

Finding the Fourth Proportional to 81,577.05, 122,203.58 and 71,835.45

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Solution

The fourth proportional to 81,577.05, 122,203.58 and 71,835.45 is: 107,610.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,577.05 : 122,203.58 = 71,835.45 : x
  2. Step 2: Convert to fraction form
    81,577.05/122,203.58 = 71,835.45/x
  3. Step 3: Cross multiply
    81,577.05x = 122,203.58 × 71,835.45
  4. Step 4: Simplify right side
    81,577.05x = 8,778,548,801.73
  5. Step 5: Solve for x
    x = 8,778,548,801.73/81,577.05
  6. Step 6: Final answer
    x = 107,610.52

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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.