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Finding the Fourth Proportional to 85,838.22, 128,733.95 and 35,910.23

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Solution

The fourth proportional to 85,838.22, 128,733.95 and 35,910.23 is: 53,855.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,838.22 : 128,733.95 = 35,910.23 : x
  2. Step 2: Convert to fraction form
    85,838.22/128,733.95 = 35,910.23/x
  3. Step 3: Cross multiply
    85,838.22x = 128,733.95 × 35,910.23
  4. Step 4: Simplify right side
    85,838.22x = 4,622,864,930.09
  5. Step 5: Solve for x
    x = 4,622,864,930.09/85,838.22
  6. Step 6: Final answer
    x = 53,855.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.