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Finding the Fourth Proportional to 115,503, 159,394.62 and 62,511

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Solution

The fourth proportional to 115,503, 159,394.62 and 62,511 is: 86,265.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,503 : 159,394.62 = 62,511 : x
  2. Step 2: Convert to fraction form
    115,503/159,394.62 = 62,511/x
  3. Step 3: Cross multiply
    115,503x = 159,394.62 × 62,511
  4. Step 4: Simplify right side
    115,503x = 9,963,917,090.82
  5. Step 5: Solve for x
    x = 9,963,917,090.82/115,503
  6. Step 6: Final answer
    x = 86,265.44

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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.