Home / 57,087.55-85,683.27-30,456.12

Finding the Fourth Proportional to 57,087.55, 85,683.27 and 30,456.12

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Solution

The fourth proportional to 57,087.55, 85,683.27 and 30,456.12 is: 45,711.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,087.55 : 85,683.27 = 30,456.12 : x
  2. Step 2: Convert to fraction form
    57,087.55/85,683.27 = 30,456.12/x
  3. Step 3: Cross multiply
    57,087.55x = 85,683.27 × 30,456.12
  4. Step 4: Simplify right side
    57,087.55x = 2,609,579,735.35
  5. Step 5: Solve for x
    x = 2,609,579,735.35/57,087.55
  6. Step 6: Final answer
    x = 45,711.89

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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.