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Finding the Fourth Proportional to 81,394.48, 122,137.08 and 43,953.76

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Solution

The fourth proportional to 81,394.48, 122,137.08 and 43,953.76 is: 65,955.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,394.48 : 122,137.08 = 43,953.76 : x
  2. Step 2: Convert to fraction form
    81,394.48/122,137.08 = 43,953.76/x
  3. Step 3: Cross multiply
    81,394.48x = 122,137.08 × 43,953.76
  4. Step 4: Simplify right side
    81,394.48x = 5,368,383,901.42
  5. Step 5: Solve for x
    x = 5,368,383,901.42/81,394.48
  6. Step 6: Final answer
    x = 65,955.13

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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.