Home / 87,064.90-120,128.58-55,222.18

Finding the Fourth Proportional to 87,064.90, 120,128.58 and 55,222.18

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Solution

The fourth proportional to 87,064.90, 120,128.58 and 55,222.18 is: 76,193.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,064.90 : 120,128.58 = 55,222.18 : x
  2. Step 2: Convert to fraction form
    87,064.90/120,128.58 = 55,222.18/x
  3. Step 3: Cross multiply
    87,064.90x = 120,128.58 × 55,222.18
  4. Step 4: Simplify right side
    87,064.90x = 6,633,762,067.90
  5. Step 5: Solve for x
    x = 6,633,762,067.90/87,064.90
  6. Step 6: Final answer
    x = 76,193.30

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1.5x scale

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.