Home / 57,121.63-78,837.21-39,201.91

Finding the Fourth Proportional to 57,121.63, 78,837.21 and 39,201.91

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Solution

The fourth proportional to 57,121.63, 78,837.21 and 39,201.91 is: 54,105.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,121.63 : 78,837.21 = 39,201.91 : x
  2. Step 2: Convert to fraction form
    57,121.63/78,837.21 = 39,201.91/x
  3. Step 3: Cross multiply
    57,121.63x = 78,837.21 × 39,201.91
  4. Step 4: Simplify right side
    57,121.63x = 3,090,569,211.07
  5. Step 5: Solve for x
    x = 3,090,569,211.07/57,121.63
  6. Step 6: Final answer
    x = 54,105.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.