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Finding the Fourth Proportional to 115,485, 159,369.38 and 62,493

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Solution

The fourth proportional to 115,485, 159,369.38 and 62,493 is: 86,240.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,485 : 159,369.38 = 62,493 : x
  2. Step 2: Convert to fraction form
    115,485/159,369.38 = 62,493/x
  3. Step 3: Cross multiply
    115,485x = 159,369.38 × 62,493
  4. Step 4: Simplify right side
    115,485x = 9,959,470,664.34
  5. Step 5: Solve for x
    x = 9,959,470,664.34/115,485
  6. Step 6: Final answer
    x = 86,240.38

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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.