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Finding the Fourth Proportional to 89,395.32, 134,110.28 and 33,987

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Solution

The fourth proportional to 89,395.32, 134,110.28 and 33,987 is: 50,987.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,395.32 : 134,110.28 = 33,987 : x
  2. Step 2: Convert to fraction form
    89,395.32/134,110.28 = 33,987/x
  3. Step 3: Cross multiply
    89,395.32x = 134,110.28 × 33,987
  4. Step 4: Simplify right side
    89,395.32x = 4,558,006,086.36
  5. Step 5: Solve for x
    x = 4,558,006,086.36/89,395.32
  6. Step 6: Final answer
    x = 50,987.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.