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Finding the Fourth Proportional to 90,619.08, 136,015.11 and 55,627.08

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Solution

The fourth proportional to 90,619.08, 136,015.11 and 55,627.08 is: 83,493.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,619.08 : 136,015.11 = 55,627.08 : x
  2. Step 2: Convert to fraction form
    90,619.08/136,015.11 = 55,627.08/x
  3. Step 3: Cross multiply
    90,619.08x = 136,015.11 × 55,627.08
  4. Step 4: Simplify right side
    90,619.08x = 7,566,123,405.18
  5. Step 5: Solve for x
    x = 7,566,123,405.18/90,619.08
  6. Step 6: Final answer
    x = 83,493.71

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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.