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Finding the Fourth Proportional to 34,479.70, 51,682.79 and 19,656.70

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Solution

The fourth proportional to 34,479.70, 51,682.79 and 19,656.70 is: 29,464.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,479.70 : 51,682.79 = 19,656.70 : x
  2. Step 2: Convert to fraction form
    34,479.70/51,682.79 = 19,656.70/x
  3. Step 3: Cross multiply
    34,479.70x = 51,682.79 × 19,656.70
  4. Step 4: Simplify right side
    34,479.70x = 1,015,913,018.13
  5. Step 5: Solve for x
    x = 1,015,913,018.13/34,479.70
  6. Step 6: Final answer
    x = 29,464.09

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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.