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Finding the Fourth Proportional to 45,407.70, 68,122.38 and 14,242.92

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Solution

The fourth proportional to 45,407.70, 68,122.38 and 14,242.92 is: 21,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,407.70 : 68,122.38 = 14,242.92 : x
  2. Step 2: Convert to fraction form
    45,407.70/68,122.38 = 14,242.92/x
  3. Step 3: Cross multiply
    45,407.70x = 68,122.38 × 14,242.92
  4. Step 4: Simplify right side
    45,407.70x = 970,261,608.55
  5. Step 5: Solve for x
    x = 970,261,608.55/45,407.70
  6. Step 6: Final answer
    x = 21,367.78

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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.