Home / 71,826.06-99,120-39,997.92

Finding the Fourth Proportional to 71,826.06, 99,120 and 39,997.92

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Solution

The fourth proportional to 71,826.06, 99,120 and 39,997.92 is: 55,197.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,826.06 : 99,120 = 39,997.92 : x
  2. Step 2: Convert to fraction form
    71,826.06/99,120 = 39,997.92/x
  3. Step 3: Cross multiply
    71,826.06x = 99,120 × 39,997.92
  4. Step 4: Simplify right side
    71,826.06x = 3,964,593,830.40
  5. Step 5: Solve for x
    x = 3,964,593,830.40/71,826.06
  6. Step 6: Final answer
    x = 55,197.15

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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.