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Finding the Fourth Proportional to 61,388.33, 92,124.78 and 21,407.62

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Solution

The fourth proportional to 61,388.33, 92,124.78 and 21,407.62 is: 32,126.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,388.33 : 92,124.78 = 21,407.62 : x
  2. Step 2: Convert to fraction form
    61,388.33/92,124.78 = 21,407.62/x
  3. Step 3: Cross multiply
    61,388.33x = 92,124.78 × 21,407.62
  4. Step 4: Simplify right side
    61,388.33x = 1,972,172,144.97
  5. Step 5: Solve for x
    x = 1,972,172,144.97/61,388.33
  6. Step 6: Final answer
    x = 32,126.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.