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Finding the Fourth Proportional to 63,074, 94,611 and 21,521

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Solution

The fourth proportional to 63,074, 94,611 and 21,521 is: 32,281.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,074 : 94,611 = 21,521 : x
  2. Step 2: Convert to fraction form
    63,074/94,611 = 21,521/x
  3. Step 3: Cross multiply
    63,074x = 94,611 × 21,521
  4. Step 4: Simplify right side
    63,074x = 2,036,123,331
  5. Step 5: Solve for x
    x = 2,036,123,331/63,074
  6. Step 6: Final answer
    x = 32,281.50

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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.