Home / 51,163.09-76,369.40-47,410.78

Finding the Fourth Proportional to 51,163.09, 76,369.40 and 47,410.78

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Solution

The fourth proportional to 51,163.09, 76,369.40 and 47,410.78 is: 70,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,163.09 : 76,369.40 = 47,410.78 : x
  2. Step 2: Convert to fraction form
    51,163.09/76,369.40 = 47,410.78/x
  3. Step 3: Cross multiply
    51,163.09x = 76,369.40 × 47,410.78
  4. Step 4: Simplify right side
    51,163.09x = 3,620,732,822.13
  5. Step 5: Solve for x
    x = 3,620,732,822.13/51,163.09
  6. Step 6: Final answer
    x = 70,768.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.