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Finding the Fourth Proportional to 40,512, 60,722.64 and 30,619.20

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Solution

The fourth proportional to 40,512, 60,722.64 and 30,619.20 is: 45,894.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,512 : 60,722.64 = 30,619.20 : x
  2. Step 2: Convert to fraction form
    40,512/60,722.64 = 30,619.20/x
  3. Step 3: Cross multiply
    40,512x = 60,722.64 × 30,619.20
  4. Step 4: Simplify right side
    40,512x = 1,859,278,658.69
  5. Step 5: Solve for x
    x = 1,859,278,658.69/40,512
  6. Step 6: Final answer
    x = 45,894.52

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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.