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Finding the Fourth Proportional to 89,489.84, 123,496.80 and 49,203.88

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Solution

The fourth proportional to 89,489.84, 123,496.80 and 49,203.88 is: 67,901.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,489.84 : 123,496.80 = 49,203.88 : x
  2. Step 2: Convert to fraction form
    89,489.84/123,496.80 = 49,203.88/x
  3. Step 3: Cross multiply
    89,489.84x = 123,496.80 × 49,203.88
  4. Step 4: Simplify right side
    89,489.84x = 6,076,521,727.58
  5. Step 5: Solve for x
    x = 6,076,521,727.58/89,489.84
  6. Step 6: Final answer
    x = 67,901.81

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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.