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Finding the Fourth Proportional to 90,486.96, 135,731.48 and 27,307.63

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Solution

The fourth proportional to 90,486.96, 135,731.48 and 27,307.63 is: 40,961.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,486.96 : 135,731.48 = 27,307.63 : x
  2. Step 2: Convert to fraction form
    90,486.96/135,731.48 = 27,307.63/x
  3. Step 3: Cross multiply
    90,486.96x = 135,731.48 × 27,307.63
  4. Step 4: Simplify right side
    90,486.96x = 3,706,505,035.19
  5. Step 5: Solve for x
    x = 3,706,505,035.19/90,486.96
  6. Step 6: Final answer
    x = 40,961.76

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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.