Home / 57,222.09-85,836.90-19,785.78

Finding the Fourth Proportional to 57,222.09, 85,836.90 and 19,785.78

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Solution

The fourth proportional to 57,222.09, 85,836.90 and 19,785.78 is: 29,679.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,222.09 : 85,836.90 = 19,785.78 : x
  2. Step 2: Convert to fraction form
    57,222.09/85,836.90 = 19,785.78/x
  3. Step 3: Cross multiply
    57,222.09x = 85,836.90 × 19,785.78
  4. Step 4: Simplify right side
    57,222.09x = 1,698,350,019.28
  5. Step 5: Solve for x
    x = 1,698,350,019.28/57,222.09
  6. Step 6: Final answer
    x = 29,679.97

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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.