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Finding the Fourth Proportional to 89,804, 123,865.44 and 76,281.44

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Solution

The fourth proportional to 89,804, 123,865.44 and 76,281.44 is: 105,213.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,804 : 123,865.44 = 76,281.44 : x
  2. Step 2: Convert to fraction form
    89,804/123,865.44 = 76,281.44/x
  3. Step 3: Cross multiply
    89,804x = 123,865.44 × 76,281.44
  4. Step 4: Simplify right side
    89,804x = 9,448,634,129.43
  5. Step 5: Solve for x
    x = 9,448,634,129.43/89,804
  6. Step 6: Final answer
    x = 105,213.96

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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.