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Finding the Fourth Proportional to 115,383, 159,228.54 and 62,391

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Solution

The fourth proportional to 115,383, 159,228.54 and 62,391 is: 86,099.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,383 : 159,228.54 = 62,391 : x
  2. Step 2: Convert to fraction form
    115,383/159,228.54 = 62,391/x
  3. Step 3: Cross multiply
    115,383x = 159,228.54 × 62,391
  4. Step 4: Simplify right side
    115,383x = 9,934,427,839.14
  5. Step 5: Solve for x
    x = 9,934,427,839.14/115,383
  6. Step 6: Final answer
    x = 86,099.58

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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.