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Finding the Fourth Proportional to 51,160.70, 76,735.71 and 13,724.78

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Solution

The fourth proportional to 51,160.70, 76,735.71 and 13,724.78 is: 20,585.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,160.70 : 76,735.71 = 13,724.78 : x
  2. Step 2: Convert to fraction form
    51,160.70/76,735.71 = 13,724.78/x
  3. Step 3: Cross multiply
    51,160.70x = 76,735.71 × 13,724.78
  4. Step 4: Simplify right side
    51,160.70x = 1,053,180,737.89
  5. Step 5: Solve for x
    x = 1,053,180,737.89/51,160.70
  6. Step 6: Final answer
    x = 20,585.74

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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.