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Finding the Fourth Proportional to 90,351, 124,684.38 and 50,607

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Solution

The fourth proportional to 90,351, 124,684.38 and 50,607 is: 69,837.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,351 : 124,684.38 = 50,607 : x
  2. Step 2: Convert to fraction form
    90,351/124,684.38 = 50,607/x
  3. Step 3: Cross multiply
    90,351x = 124,684.38 × 50,607
  4. Step 4: Simplify right side
    90,351x = 6,309,902,418.66
  5. Step 5: Solve for x
    x = 6,309,902,418.66/90,351
  6. Step 6: Final answer
    x = 69,837.66

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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.