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Finding the Fourth Proportional to 85,616.76, 128,450.58 and 41,230.68

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Solution

The fourth proportional to 85,616.76, 128,450.58 and 41,230.68 is: 61,858.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,616.76 : 128,450.58 = 41,230.68 : x
  2. Step 2: Convert to fraction form
    85,616.76/128,450.58 = 41,230.68/x
  3. Step 3: Cross multiply
    85,616.76x = 128,450.58 × 41,230.68
  4. Step 4: Simplify right side
    85,616.76x = 5,296,104,759.79
  5. Step 5: Solve for x
    x = 5,296,104,759.79/85,616.76
  6. Step 6: Final answer
    x = 61,858.27

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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.