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Finding the Fourth Proportional to 84,762.25, 127,167.44 and 69,115.28

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Solution

The fourth proportional to 84,762.25, 127,167.44 and 69,115.28 is: 103,692.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,762.25 : 127,167.44 = 69,115.28 : x
  2. Step 2: Convert to fraction form
    84,762.25/127,167.44 = 69,115.28/x
  3. Step 3: Cross multiply
    84,762.25x = 127,167.44 × 69,115.28
  4. Step 4: Simplify right side
    84,762.25x = 8,789,212,241.07
  5. Step 5: Solve for x
    x = 8,789,212,241.07/84,762.25
  6. Step 6: Final answer
    x = 103,692.53

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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.