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Finding the Fourth Proportional to 51,107.70, 76,661.55 and 17,816.70

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Solution

The fourth proportional to 51,107.70, 76,661.55 and 17,816.70 is: 26,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,107.70 : 76,661.55 = 17,816.70 : x
  2. Step 2: Convert to fraction form
    51,107.70/76,661.55 = 17,816.70/x
  3. Step 3: Cross multiply
    51,107.70x = 76,661.55 × 17,816.70
  4. Step 4: Simplify right side
    51,107.70x = 1,365,855,837.89
  5. Step 5: Solve for x
    x = 1,365,855,837.89/51,107.70
  6. Step 6: Final answer
    x = 26,725.05

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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.