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Finding the Fourth Proportional to 51,147.70, 76,721.54 and 19,560.95

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Solution

The fourth proportional to 51,147.70, 76,721.54 and 19,560.95 is: 29,341.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,147.70 : 76,721.54 = 19,560.95 : x
  2. Step 2: Convert to fraction form
    51,147.70/76,721.54 = 19,560.95/x
  3. Step 3: Cross multiply
    51,147.70x = 76,721.54 × 19,560.95
  4. Step 4: Simplify right side
    51,147.70x = 1,500,745,824.26
  5. Step 5: Solve for x
    x = 1,500,745,824.26/51,147.70
  6. Step 6: Final answer
    x = 29,341.41

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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.