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Finding the Fourth Proportional to 51,136.88, 76,732.88 and 21,575.20

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Solution

The fourth proportional to 51,136.88, 76,732.88 and 21,575.20 is: 32,374.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,136.88 : 76,732.88 = 21,575.20 : x
  2. Step 2: Convert to fraction form
    51,136.88/76,732.88 = 21,575.20/x
  3. Step 3: Cross multiply
    51,136.88x = 76,732.88 × 21,575.20
  4. Step 4: Simplify right side
    51,136.88x = 1,655,527,232.58
  5. Step 5: Solve for x
    x = 1,655,527,232.58/51,136.88
  6. Step 6: Final answer
    x = 32,374.43

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1.5x scale

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.