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Finding the Fourth Proportional to 62,700.75, 94,051.13 and 21,147.75

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Solution

The fourth proportional to 62,700.75, 94,051.13 and 21,147.75 is: 31,721.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,700.75 : 94,051.13 = 21,147.75 : x
  2. Step 2: Convert to fraction form
    62,700.75/94,051.13 = 21,147.75/x
  3. Step 3: Cross multiply
    62,700.75x = 94,051.13 × 21,147.75
  4. Step 4: Simplify right side
    62,700.75x = 1,988,969,678.72
  5. Step 5: Solve for x
    x = 1,988,969,678.72/62,700.75
  6. Step 6: Final answer
    x = 31,721.63

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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.