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Finding the Fourth Proportional to 79,955.56, 120,076.28 and 76,741.17

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Solution

The fourth proportional to 79,955.56, 120,076.28 and 76,741.17 is: 115,248.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,955.56 : 120,076.28 = 76,741.17 : x
  2. Step 2: Convert to fraction form
    79,955.56/120,076.28 = 76,741.17/x
  3. Step 3: Cross multiply
    79,955.56x = 120,076.28 × 76,741.17
  4. Step 4: Simplify right side
    79,955.56x = 9,214,793,616.07
  5. Step 5: Solve for x
    x = 9,214,793,616.07/79,955.56
  6. Step 6: Final answer
    x = 115,248.95

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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.