Home / 87,812.20-121,148.22-55,973.80

Finding the Fourth Proportional to 87,812.20, 121,148.22 and 55,973.80

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Solution

The fourth proportional to 87,812.20, 121,148.22 and 55,973.80 is: 77,223.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,812.20 : 121,148.22 = 55,973.80 : x
  2. Step 2: Convert to fraction form
    87,812.20/121,148.22 = 55,973.80/x
  3. Step 3: Cross multiply
    87,812.20x = 121,148.22 × 55,973.80
  4. Step 4: Simplify right side
    87,812.20x = 6,781,126,236.64
  5. Step 5: Solve for x
    x = 6,781,126,236.64/87,812.20
  6. Step 6: Final answer
    x = 77,223.05

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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.