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Finding the Fourth Proportional to 60,906.51, 91,336.32 and 20,918.04

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Solution

The fourth proportional to 60,906.51, 91,336.32 and 20,918.04 is: 31,369.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,906.51 : 91,336.32 = 20,918.04 : x
  2. Step 2: Convert to fraction form
    60,906.51/91,336.32 = 20,918.04/x
  3. Step 3: Cross multiply
    60,906.51x = 91,336.32 × 20,918.04
  4. Step 4: Simplify right side
    60,906.51x = 1,910,576,795.21
  5. Step 5: Solve for x
    x = 1,910,576,795.21/60,906.51
  6. Step 6: Final answer
    x = 31,369.01

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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.