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Finding the Fourth Proportional to 50,607.75, 75,859.79 and 21,042.75

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Solution

The fourth proportional to 50,607.75, 75,859.79 and 21,042.75 is: 31,542.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,607.75 : 75,859.79 = 21,042.75 : x
  2. Step 2: Convert to fraction form
    50,607.75/75,859.79 = 21,042.75/x
  3. Step 3: Cross multiply
    50,607.75x = 75,859.79 × 21,042.75
  4. Step 4: Simplify right side
    50,607.75x = 1,596,298,490.81
  5. Step 5: Solve for x
    x = 1,596,298,490.81/50,607.75
  6. Step 6: Final answer
    x = 31,542.57

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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.