Home / 57,989.10-86,959.05-20,558.60

Finding the Fourth Proportional to 57,989.10, 86,959.05 and 20,558.60

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Solution

The fourth proportional to 57,989.10, 86,959.05 and 20,558.60 is: 30,829.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,989.10 : 86,959.05 = 20,558.60 : x
  2. Step 2: Convert to fraction form
    57,989.10/86,959.05 = 20,558.60/x
  3. Step 3: Cross multiply
    57,989.10x = 86,959.05 × 20,558.60
  4. Step 4: Simplify right side
    57,989.10x = 1,787,756,325.33
  5. Step 5: Solve for x
    x = 1,787,756,325.33/57,989.10
  6. Step 6: Final answer
    x = 30,829.18

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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.