Home / 72,183.76-99,615.12-40,351.97

Finding the Fourth Proportional to 72,183.76, 99,615.12 and 40,351.97

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Solution

The fourth proportional to 72,183.76, 99,615.12 and 40,351.97 is: 55,686.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,183.76 : 99,615.12 = 40,351.97 : x
  2. Step 2: Convert to fraction form
    72,183.76/99,615.12 = 40,351.97/x
  3. Step 3: Cross multiply
    72,183.76x = 99,615.12 × 40,351.97
  4. Step 4: Simplify right side
    72,183.76x = 4,019,666,431.50
  5. Step 5: Solve for x
    x = 4,019,666,431.50/72,183.76
  6. Step 6: Final answer
    x = 55,686.58

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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.