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Finding the Fourth Proportional to 90,231.30, 135,368.82 and 27,051.30

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Solution

The fourth proportional to 90,231.30, 135,368.82 and 27,051.30 is: 40,583.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,231.30 : 135,368.82 = 27,051.30 : x
  2. Step 2: Convert to fraction form
    90,231.30/135,368.82 = 27,051.30/x
  3. Step 3: Cross multiply
    90,231.30x = 135,368.82 × 27,051.30
  4. Step 4: Simplify right side
    90,231.30x = 3,661,902,560.47
  5. Step 5: Solve for x
    x = 3,661,902,560.47/90,231.30
  6. Step 6: Final answer
    x = 40,583.51

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1.5x scale

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.