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Finding the Fourth Proportional to 115,380, 159,224.40 and 62,388

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Solution

The fourth proportional to 115,380, 159,224.40 and 62,388 is: 86,095.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,380 : 159,224.40 = 62,388 : x
  2. Step 2: Convert to fraction form
    115,380/159,224.40 = 62,388/x
  3. Step 3: Cross multiply
    115,380x = 159,224.40 × 62,388
  4. Step 4: Simplify right side
    115,380x = 9,933,691,867.20
  5. Step 5: Solve for x
    x = 9,933,691,867.20/115,380
  6. Step 6: Final answer
    x = 86,095.44

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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.