Home / 87,806.26-121,172.64-47,520.31

Finding the Fourth Proportional to 87,806.26, 121,172.64 and 47,520.31

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Solution

The fourth proportional to 87,806.26, 121,172.64 and 47,520.31 is: 65,578.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,806.26 : 121,172.64 = 47,520.31 : x
  2. Step 2: Convert to fraction form
    87,806.26/121,172.64 = 47,520.31/x
  3. Step 3: Cross multiply
    87,806.26x = 121,172.64 × 47,520.31
  4. Step 4: Simplify right side
    87,806.26x = 5,758,161,416.32
  5. Step 5: Solve for x
    x = 5,758,161,416.32/87,806.26
  6. Step 6: Final answer
    x = 65,578.03

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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.