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Finding the Fourth Proportional to 67,254.72, 100,881.76 and 20,507.44

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Solution

The fourth proportional to 67,254.72, 100,881.76 and 20,507.44 is: 30,761.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,254.72 : 100,881.76 = 20,507.44 : x
  2. Step 2: Convert to fraction form
    67,254.72/100,881.76 = 20,507.44/x
  3. Step 3: Cross multiply
    67,254.72x = 100,881.76 × 20,507.44
  4. Step 4: Simplify right side
    67,254.72x = 2,068,826,640.29
  5. Step 5: Solve for x
    x = 2,068,826,640.29/67,254.72
  6. Step 6: Final answer
    x = 30,761.06

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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.