Home / 85,285.94-127,929.20-26,121.34

Finding the Fourth Proportional to 85,285.94, 127,929.20 and 26,121.34

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Solution

The fourth proportional to 85,285.94, 127,929.20 and 26,121.34 is: 39,182.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,285.94 : 127,929.20 = 26,121.34 : x
  2. Step 2: Convert to fraction form
    85,285.94/127,929.20 = 26,121.34/x
  3. Step 3: Cross multiply
    85,285.94x = 127,929.20 × 26,121.34
  4. Step 4: Simplify right side
    85,285.94x = 3,341,682,129.13
  5. Step 5: Solve for x
    x = 3,341,682,129.13/85,285.94
  6. Step 6: Final answer
    x = 39,182.10

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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.