Home / 66,518.20-99,809.70-50,717.80

Finding the Fourth Proportional to 66,518.20, 99,809.70 and 50,717.80

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Solution

The fourth proportional to 66,518.20, 99,809.70 and 50,717.80 is: 76,101.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,518.20 : 99,809.70 = 50,717.80 : x
  2. Step 2: Convert to fraction form
    66,518.20/99,809.70 = 50,717.80/x
  3. Step 3: Cross multiply
    66,518.20x = 99,809.70 × 50,717.80
  4. Step 4: Simplify right side
    66,518.20x = 5,062,128,402.66
  5. Step 5: Solve for x
    x = 5,062,128,402.66/66,518.20
  6. Step 6: Final answer
    x = 76,101.40

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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.