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Finding the Fourth Proportional to 89,770.65, 123,883.90 and 49,483.54

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Solution

The fourth proportional to 89,770.65, 123,883.90 and 49,483.54 is: 68,287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,770.65 : 123,883.90 = 49,483.54 : x
  2. Step 2: Convert to fraction form
    89,770.65/123,883.90 = 49,483.54/x
  3. Step 3: Cross multiply
    89,770.65x = 123,883.90 × 49,483.54
  4. Step 4: Simplify right side
    89,770.65x = 6,130,213,952.15
  5. Step 5: Solve for x
    x = 6,130,213,952.15/89,770.65
  6. Step 6: Final answer
    x = 68,287.51

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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.