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Finding the Fourth Proportional to 45,253.46, 67,906.64 and 18,956

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Solution

The fourth proportional to 45,253.46, 67,906.64 and 18,956 is: 28,445.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,253.46 : 67,906.64 = 18,956 : x
  2. Step 2: Convert to fraction form
    45,253.46/67,906.64 = 18,956/x
  3. Step 3: Cross multiply
    45,253.46x = 67,906.64 × 18,956
  4. Step 4: Simplify right side
    45,253.46x = 1,287,238,267.84
  5. Step 5: Solve for x
    x = 1,287,238,267.84/45,253.46
  6. Step 6: Final answer
    x = 28,445.08

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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.