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Finding the Fourth Proportional to 90,830.30, 136,239.84 and 33,893.12

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Solution

The fourth proportional to 90,830.30, 136,239.84 and 33,893.12 is: 50,837.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,830.30 : 136,239.84 = 33,893.12 : x
  2. Step 2: Convert to fraction form
    90,830.30/136,239.84 = 33,893.12/x
  3. Step 3: Cross multiply
    90,830.30x = 136,239.84 × 33,893.12
  4. Step 4: Simplify right side
    90,830.30x = 4,617,593,586.50
  5. Step 5: Solve for x
    x = 4,617,593,586.50/90,830.30
  6. Step 6: Final answer
    x = 50,837.59

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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.