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Finding the Fourth Proportional to 34,772, 48,011.66 and 21,361.64

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Solution

The fourth proportional to 34,772, 48,011.66 and 21,361.64 is: 29,495.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,772 : 48,011.66 = 21,361.64 : x
  2. Step 2: Convert to fraction form
    34,772/48,011.66 = 21,361.64/x
  3. Step 3: Cross multiply
    34,772x = 48,011.66 × 21,361.64
  4. Step 4: Simplify right side
    34,772x = 1,025,607,796.72
  5. Step 5: Solve for x
    x = 1,025,607,796.72/34,772
  6. Step 6: Final answer
    x = 29,495.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.