Home / 85,823.57-128,749.13-26,645.37

Finding the Fourth Proportional to 85,823.57, 128,749.13 and 26,645.37

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Solution

The fourth proportional to 85,823.57, 128,749.13 and 26,645.37 is: 39,972.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,823.57 : 128,749.13 = 26,645.37 : x
  2. Step 2: Convert to fraction form
    85,823.57/128,749.13 = 26,645.37/x
  3. Step 3: Cross multiply
    85,823.57x = 128,749.13 × 26,645.37
  4. Step 4: Simplify right side
    85,823.57x = 3,430,568,072.80
  5. Step 5: Solve for x
    x = 3,430,568,072.80/85,823.57
  6. Step 6: Final answer
    x = 39,972.33

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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.