Home / 78,340.36-108,110.82-42,530.44

Finding the Fourth Proportional to 78,340.36, 108,110.82 and 42,530.44

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Solution

The fourth proportional to 78,340.36, 108,110.82 and 42,530.44 is: 58,692.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,340.36 : 108,110.82 = 42,530.44 : x
  2. Step 2: Convert to fraction form
    78,340.36/108,110.82 = 42,530.44/x
  3. Step 3: Cross multiply
    78,340.36x = 108,110.82 × 42,530.44
  4. Step 4: Simplify right side
    78,340.36x = 4,598,000,743.36
  5. Step 5: Solve for x
    x = 4,598,000,743.36/78,340.36
  6. Step 6: Final answer
    x = 58,692.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.