Home / 86,714.20-129,974.10-36,785.80

Finding the Fourth Proportional to 86,714.20, 129,974.10 and 36,785.80

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Solution

The fourth proportional to 86,714.20, 129,974.10 and 36,785.80 is: 55,137.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,714.20 : 129,974.10 = 36,785.80 : x
  2. Step 2: Convert to fraction form
    86,714.20/129,974.10 = 36,785.80/x
  3. Step 3: Cross multiply
    86,714.20x = 129,974.10 × 36,785.80
  4. Step 4: Simplify right side
    86,714.20x = 4,781,201,247.78
  5. Step 5: Solve for x
    x = 4,781,201,247.78/86,714.20
  6. Step 6: Final answer
    x = 55,137.47

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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.