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Finding the Fourth Proportional to 90,735.78, 136,014.96 and 40,828.44

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Solution

The fourth proportional to 90,735.78, 136,014.96 and 40,828.44 is: 61,202.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,735.78 : 136,014.96 = 40,828.44 : x
  2. Step 2: Convert to fraction form
    90,735.78/136,014.96 = 40,828.44/x
  3. Step 3: Cross multiply
    90,735.78x = 136,014.96 × 40,828.44
  4. Step 4: Simplify right side
    90,735.78x = 5,553,278,633.46
  5. Step 5: Solve for x
    x = 5,553,278,633.46/90,735.78
  6. Step 6: Final answer
    x = 61,202.74

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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.