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Finding the Fourth Proportional to 90,120.80, 135,160.20 and 33,966.51

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Solution

The fourth proportional to 90,120.80, 135,160.20 and 33,966.51 is: 50,941.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,120.80 : 135,160.20 = 33,966.51 : x
  2. Step 2: Convert to fraction form
    90,120.80/135,160.20 = 33,966.51/x
  3. Step 3: Cross multiply
    90,120.80x = 135,160.20 × 33,966.51
  4. Step 4: Simplify right side
    90,120.80x = 4,590,920,284.90
  5. Step 5: Solve for x
    x = 4,590,920,284.90/90,120.80
  6. Step 6: Final answer
    x = 50,941.85

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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.