Home / 87,778.86-121,194.21-57,615.46

Finding the Fourth Proportional to 87,778.86, 121,194.21 and 57,615.46

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Solution

The fourth proportional to 87,778.86, 121,194.21 and 57,615.46 is: 79,548.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,778.86 : 121,194.21 = 57,615.46 : x
  2. Step 2: Convert to fraction form
    87,778.86/121,194.21 = 57,615.46/x
  3. Step 3: Cross multiply
    87,778.86x = 121,194.21 × 57,615.46
  4. Step 4: Simplify right side
    87,778.86x = 6,982,660,158.49
  5. Step 5: Solve for x
    x = 6,982,660,158.49/87,778.86
  6. Step 6: Final answer
    x = 79,548.31

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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.