Home / 81,890.35-122,834.14-36,886.68

Finding the Fourth Proportional to 81,890.35, 122,834.14 and 36,886.68

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Solution

The fourth proportional to 81,890.35, 122,834.14 and 36,886.68 is: 55,329.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,890.35 : 122,834.14 = 36,886.68 : x
  2. Step 2: Convert to fraction form
    81,890.35/122,834.14 = 36,886.68/x
  3. Step 3: Cross multiply
    81,890.35x = 122,834.14 × 36,886.68
  4. Step 4: Simplify right side
    81,890.35x = 4,530,943,615.26
  5. Step 5: Solve for x
    x = 4,530,943,615.26/81,890.35
  6. Step 6: Final answer
    x = 55,329.40

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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.