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Finding the Fourth Proportional to 253,071.78, 379,607.73 and 66,081.66

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Solution

The fourth proportional to 253,071.78, 379,607.73 and 66,081.66 is: 99,122.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,071.78 : 379,607.73 = 66,081.66 : x
  2. Step 2: Convert to fraction form
    253,071.78/379,607.73 = 66,081.66/x
  3. Step 3: Cross multiply
    253,071.78x = 379,607.73 × 66,081.66
  4. Step 4: Simplify right side
    253,071.78x = 25,085,108,947.23
  5. Step 5: Solve for x
    x = 25,085,108,947.23/253,071.78
  6. Step 6: Final answer
    x = 99,122.51

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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.