Home / 81,383.45-122,154.08-39,293.21

Finding the Fourth Proportional to 81,383.45, 122,154.08 and 39,293.21

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Solution

The fourth proportional to 81,383.45, 122,154.08 and 39,293.21 is: 58,977.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,383.45 : 122,154.08 = 39,293.21 : x
  2. Step 2: Convert to fraction form
    81,383.45/122,154.08 = 39,293.21/x
  3. Step 3: Cross multiply
    81,383.45x = 122,154.08 × 39,293.21
  4. Step 4: Simplify right side
    81,383.45x = 4,799,826,026.72
  5. Step 5: Solve for x
    x = 4,799,826,026.72/81,383.45
  6. Step 6: Final answer
    x = 58,977.92

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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.