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Finding the Fourth Proportional to 89,697.30, 123,783.12 and 49,412.49

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Solution

The fourth proportional to 89,697.30, 123,783.12 and 49,412.49 is: 68,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,697.30 : 123,783.12 = 49,412.49 : x
  2. Step 2: Convert to fraction form
    89,697.30/123,783.12 = 49,412.49/x
  3. Step 3: Cross multiply
    89,697.30x = 123,783.12 × 49,412.49
  4. Step 4: Simplify right side
    89,697.30x = 6,116,432,179.17
  5. Step 5: Solve for x
    x = 6,116,432,179.17/89,697.30
  6. Step 6: Final answer
    x = 68,189.70

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