Home / 87,213.26-130,815.78-51,209.77

Finding the Fourth Proportional to 87,213.26, 130,815.78 and 51,209.77

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Solution

The fourth proportional to 87,213.26, 130,815.78 and 51,209.77 is: 76,812.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,213.26 : 130,815.78 = 51,209.77 : x
  2. Step 2: Convert to fraction form
    87,213.26/130,815.78 = 51,209.77/x
  3. Step 3: Cross multiply
    87,213.26x = 130,815.78 × 51,209.77
  4. Step 4: Simplify right side
    87,213.26x = 6,699,046,164.46
  5. Step 5: Solve for x
    x = 6,699,046,164.46/87,213.26
  6. Step 6: Final answer
    x = 76,812.25

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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.