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Finding the Fourth Proportional to 69,986, 96,753.48 and 67,048.40

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Solution

The fourth proportional to 69,986, 96,753.48 and 67,048.40 is: 92,692.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,986 : 96,753.48 = 67,048.40 : x
  2. Step 2: Convert to fraction form
    69,986/96,753.48 = 67,048.40/x
  3. Step 3: Cross multiply
    69,986x = 96,753.48 × 67,048.40
  4. Step 4: Simplify right side
    69,986x = 6,487,166,028.43
  5. Step 5: Solve for x
    x = 6,487,166,028.43/69,986
  6. Step 6: Final answer
    x = 92,692.34

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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.