Home / 81,778.32-122,641.56-35,018.64

Finding the Fourth Proportional to 81,778.32, 122,641.56 and 35,018.64

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Solution

The fourth proportional to 81,778.32, 122,641.56 and 35,018.64 is: 52,516.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,778.32 : 122,641.56 = 35,018.64 : x
  2. Step 2: Convert to fraction form
    81,778.32/122,641.56 = 35,018.64/x
  3. Step 3: Cross multiply
    81,778.32x = 122,641.56 × 35,018.64
  4. Step 4: Simplify right side
    81,778.32x = 4,294,740,638.68
  5. Step 5: Solve for x
    x = 4,294,740,638.68/81,778.32
  6. Step 6: Final answer
    x = 52,516.86

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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.