Home / 87,238.09-130,857.14-28,078.39

Finding the Fourth Proportional to 87,238.09, 130,857.14 and 28,078.39

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Solution

The fourth proportional to 87,238.09, 130,857.14 and 28,078.39 is: 42,117.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,238.09 : 130,857.14 = 28,078.39 : x
  2. Step 2: Convert to fraction form
    87,238.09/130,857.14 = 28,078.39/x
  3. Step 3: Cross multiply
    87,238.09x = 130,857.14 × 28,078.39
  4. Step 4: Simplify right side
    87,238.09x = 3,674,257,811.20
  5. Step 5: Solve for x
    x = 3,674,257,811.20/87,238.09
  6. Step 6: Final answer
    x = 42,117.59

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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.