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Finding the Fourth Proportional to 89,692.56, 123,784.46 and 66,992.12

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Solution

The fourth proportional to 89,692.56, 123,784.46 and 66,992.12 is: 92,455.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,692.56 : 123,784.46 = 66,992.12 : x
  2. Step 2: Convert to fraction form
    89,692.56/123,784.46 = 66,992.12/x
  3. Step 3: Cross multiply
    89,692.56x = 123,784.46 × 66,992.12
  4. Step 4: Simplify right side
    89,692.56x = 8,292,583,398.46
  5. Step 5: Solve for x
    x = 8,292,583,398.46/89,692.56
  6. Step 6: Final answer
    x = 92,455.64

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1.5x scale

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.