Home / 81,414.37-121,911.24-56,191.72

Finding the Fourth Proportional to 81,414.37, 121,911.24 and 56,191.72

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Solution

The fourth proportional to 81,414.37, 121,911.24 and 56,191.72 is: 84,142.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,414.37 : 121,911.24 = 56,191.72 : x
  2. Step 2: Convert to fraction form
    81,414.37/121,911.24 = 56,191.72/x
  3. Step 3: Cross multiply
    81,414.37x = 121,911.24 × 56,191.72
  4. Step 4: Simplify right side
    81,414.37x = 6,850,402,262.93
  5. Step 5: Solve for x
    x = 6,850,402,262.93/81,414.37
  6. Step 6: Final answer
    x = 84,142.42

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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.