Home / 87,859.20-121,245.76-47,573.28

Finding the Fourth Proportional to 87,859.20, 121,245.76 and 47,573.28

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Solution

The fourth proportional to 87,859.20, 121,245.76 and 47,573.28 is: 65,651.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,859.20 : 121,245.76 = 47,573.28 : x
  2. Step 2: Convert to fraction form
    87,859.20/121,245.76 = 47,573.28/x
  3. Step 3: Cross multiply
    87,859.20x = 121,245.76 × 47,573.28
  4. Step 4: Simplify right side
    87,859.20x = 5,768,058,489.29
  5. Step 5: Solve for x
    x = 5,768,058,489.29/87,859.20
  6. Step 6: Final answer
    x = 65,651.16

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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.