Home / 57,419.20-85,885.80-51,538.60

Finding the Fourth Proportional to 57,419.20, 85,885.80 and 51,538.60

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Solution

The fourth proportional to 57,419.20, 85,885.80 and 51,538.60 is: 77,089.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,419.20 : 85,885.80 = 51,538.60 : x
  2. Step 2: Convert to fraction form
    57,419.20/85,885.80 = 51,538.60/x
  3. Step 3: Cross multiply
    57,419.20x = 85,885.80 × 51,538.60
  4. Step 4: Simplify right side
    57,419.20x = 4,426,433,891.88
  5. Step 5: Solve for x
    x = 4,426,433,891.88/57,419.20
  6. Step 6: Final answer
    x = 77,089.79

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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.