Home / 85,564.16-128,299.26-26,383.40

Finding the Fourth Proportional to 85,564.16, 128,299.26 and 26,383.40

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Solution

The fourth proportional to 85,564.16, 128,299.26 and 26,383.40 is: 39,560.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,564.16 : 128,299.26 = 26,383.40 : x
  2. Step 2: Convert to fraction form
    85,564.16/128,299.26 = 26,383.40/x
  3. Step 3: Cross multiply
    85,564.16x = 128,299.26 × 26,383.40
  4. Step 4: Simplify right side
    85,564.16x = 3,384,970,696.28
  5. Step 5: Solve for x
    x = 3,384,970,696.28/85,564.16
  6. Step 6: Final answer
    x = 39,560.61

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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.