Home / 85,916.55-128,921.81-33,328.11

Finding the Fourth Proportional to 85,916.55, 128,921.81 and 33,328.11

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Solution

The fourth proportional to 85,916.55, 128,921.81 and 33,328.11 is: 50,010.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,916.55 : 128,921.81 = 33,328.11 : x
  2. Step 2: Convert to fraction form
    85,916.55/128,921.81 = 33,328.11/x
  3. Step 3: Cross multiply
    85,916.55x = 128,921.81 × 33,328.11
  4. Step 4: Simplify right side
    85,916.55x = 4,296,720,098.44
  5. Step 5: Solve for x
    x = 4,296,720,098.44/85,916.55
  6. Step 6: Final answer
    x = 50,010.39

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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.