Home / 83,640.21-115,395.33-53,443.18

Finding the Fourth Proportional to 83,640.21, 115,395.33 and 53,443.18

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Solution

The fourth proportional to 83,640.21, 115,395.33 and 53,443.18 is: 73,733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,640.21 : 115,395.33 = 53,443.18 : x
  2. Step 2: Convert to fraction form
    83,640.21/115,395.33 = 53,443.18/x
  3. Step 3: Cross multiply
    83,640.21x = 115,395.33 × 53,443.18
  4. Step 4: Simplify right side
    83,640.21x = 6,167,093,392.35
  5. Step 5: Solve for x
    x = 6,167,093,392.35/83,640.21
  6. Step 6: Final answer
    x = 73,733.60

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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.