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Finding the Fourth Proportional to 79,814, 119,721.60 and 35,428.82

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Solution

The fourth proportional to 79,814, 119,721.60 and 35,428.82 is: 53,143.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,814 : 119,721.60 = 35,428.82 : x
  2. Step 2: Convert to fraction form
    79,814/119,721.60 = 35,428.82/x
  3. Step 3: Cross multiply
    79,814x = 119,721.60 × 35,428.82
  4. Step 4: Simplify right side
    79,814x = 4,241,595,016.51
  5. Step 5: Solve for x
    x = 4,241,595,016.51/79,814
  6. Step 6: Final answer
    x = 53,143.50

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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.