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Finding the Fourth Proportional to 89,691.80, 134,362.56 and 54,544.28

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Solution

The fourth proportional to 89,691.80, 134,362.56 and 54,544.28 is: 81,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,691.80 : 134,362.56 = 54,544.28 : x
  2. Step 2: Convert to fraction form
    89,691.80/134,362.56 = 54,544.28/x
  3. Step 3: Cross multiply
    89,691.80x = 134,362.56 × 54,544.28
  4. Step 4: Simplify right side
    89,691.80x = 7,328,709,094.16
  5. Step 5: Solve for x
    x = 7,328,709,094.16/89,691.80
  6. Step 6: Final answer
    x = 81,709.91

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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.