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Finding the Fourth Proportional to 62,719.88, 94,079.81 and 21,166.88

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Solution

The fourth proportional to 62,719.88, 94,079.81 and 21,166.88 is: 31,750.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,719.88 : 94,079.81 = 21,166.88 : x
  2. Step 2: Convert to fraction form
    62,719.88/94,079.81 = 21,166.88/x
  3. Step 3: Cross multiply
    62,719.88x = 94,079.81 × 21,166.88
  4. Step 4: Simplify right side
    62,719.88x = 1,991,375,631.21
  5. Step 5: Solve for x
    x = 1,991,375,631.21/62,719.88
  6. Step 6: Final answer
    x = 31,750.31

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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.