Home / 87,112.47-120,200.64-51,309.62

Finding the Fourth Proportional to 87,112.47, 120,200.64 and 51,309.62

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Solution

The fourth proportional to 87,112.47, 120,200.64 and 51,309.62 is: 70,798.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,112.47 : 120,200.64 = 51,309.62 : x
  2. Step 2: Convert to fraction form
    87,112.47/120,200.64 = 51,309.62/x
  3. Step 3: Cross multiply
    87,112.47x = 120,200.64 × 51,309.62
  4. Step 4: Simplify right side
    87,112.47x = 6,167,448,819.49
  5. Step 5: Solve for x
    x = 6,167,448,819.49/87,112.47
  6. Step 6: Final answer
    x = 70,798.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.