Home / 85,391.14-127,999.20-35,500.18

Finding the Fourth Proportional to 85,391.14, 127,999.20 and 35,500.18

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Solution

The fourth proportional to 85,391.14, 127,999.20 and 35,500.18 is: 53,213.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,391.14 : 127,999.20 = 35,500.18 : x
  2. Step 2: Convert to fraction form
    85,391.14/127,999.20 = 35,500.18/x
  3. Step 3: Cross multiply
    85,391.14x = 127,999.20 × 35,500.18
  4. Step 4: Simplify right side
    85,391.14x = 4,543,994,639.86
  5. Step 5: Solve for x
    x = 4,543,994,639.86/85,391.14
  6. Step 6: Final answer
    x = 53,213.89

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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.