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Finding the Fourth Proportional to 61,471.68, 92,219.04 and 19,913.28

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Solution

The fourth proportional to 61,471.68, 92,219.04 and 19,913.28 is: 29,873.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,471.68 : 92,219.04 = 19,913.28 : x
  2. Step 2: Convert to fraction form
    61,471.68/92,219.04 = 19,913.28/x
  3. Step 3: Cross multiply
    61,471.68x = 92,219.04 × 19,913.28
  4. Step 4: Simplify right side
    61,471.68x = 1,836,383,564.85
  5. Step 5: Solve for x
    x = 1,836,383,564.85/61,471.68
  6. Step 6: Final answer
    x = 29,873.65

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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.