Home / 87,942.30-121,415.40-67,760.88

Finding the Fourth Proportional to 87,942.30, 121,415.40 and 67,760.88

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Solution

The fourth proportional to 87,942.30, 121,415.40 and 67,760.88 is: 93,552.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,942.30 : 121,415.40 = 67,760.88 : x
  2. Step 2: Convert to fraction form
    87,942.30/121,415.40 = 67,760.88/x
  3. Step 3: Cross multiply
    87,942.30x = 121,415.40 × 67,760.88
  4. Step 4: Simplify right side
    87,942.30x = 8,227,214,349.55
  5. Step 5: Solve for x
    x = 8,227,214,349.55/87,942.30
  6. Step 6: Final answer
    x = 93,552.41

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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.