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Finding the Fourth Proportional to 45,256.46, 67,894.44 and 13,663.88

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Solution

The fourth proportional to 45,256.46, 67,894.44 and 13,663.88 is: 20,498.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,256.46 : 67,894.44 = 13,663.88 : x
  2. Step 2: Convert to fraction form
    45,256.46/67,894.44 = 13,663.88/x
  3. Step 3: Cross multiply
    45,256.46x = 67,894.44 × 13,663.88
  4. Step 4: Simplify right side
    45,256.46x = 927,701,480.83
  5. Step 5: Solve for x
    x = 927,701,480.83/45,256.46
  6. Step 6: Final answer
    x = 20,498.76

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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.