Home / 57,301.20-85,708.80-51,420.60

Finding the Fourth Proportional to 57,301.20, 85,708.80 and 51,420.60

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Solution

The fourth proportional to 57,301.20, 85,708.80 and 51,420.60 is: 76,912.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,301.20 : 85,708.80 = 51,420.60 : x
  2. Step 2: Convert to fraction form
    57,301.20/85,708.80 = 51,420.60/x
  3. Step 3: Cross multiply
    57,301.20x = 85,708.80 × 51,420.60
  4. Step 4: Simplify right side
    57,301.20x = 4,407,197,921.28
  5. Step 5: Solve for x
    x = 4,407,197,921.28/57,301.20
  6. Step 6: Final answer
    x = 76,912.84

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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.