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Finding the Fourth Proportional to 75,692.75, 104,456.01 and 42,158.75

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Solution

The fourth proportional to 75,692.75, 104,456.01 and 42,158.75 is: 58,179.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,692.75 : 104,456.01 = 42,158.75 : x
  2. Step 2: Convert to fraction form
    75,692.75/104,456.01 = 42,158.75/x
  3. Step 3: Cross multiply
    75,692.75x = 104,456.01 × 42,158.75
  4. Step 4: Simplify right side
    75,692.75x = 4,403,734,811.59
  5. Step 5: Solve for x
    x = 4,403,734,811.59/75,692.75
  6. Step 6: Final answer
    x = 58,179.08

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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.