Home / 87,649.74-121,014.99-51,851.22

Finding the Fourth Proportional to 87,649.74, 121,014.99 and 51,851.22

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Solution

The fourth proportional to 87,649.74, 121,014.99 and 51,851.22 is: 71,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,649.74 : 121,014.99 = 51,851.22 : x
  2. Step 2: Convert to fraction form
    87,649.74/121,014.99 = 51,851.22/x
  3. Step 3: Cross multiply
    87,649.74x = 121,014.99 × 51,851.22
  4. Step 4: Simplify right side
    87,649.74x = 6,274,774,869.79
  5. Step 5: Solve for x
    x = 6,274,774,869.79/87,649.74
  6. Step 6: Final answer
    x = 71,589.20

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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.