Home / 57,989.17-86,959.15-20,558.66

Finding the Fourth Proportional to 57,989.17, 86,959.15 and 20,558.66

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Solution

The fourth proportional to 57,989.17, 86,959.15 and 20,558.66 is: 30,829.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,989.17 : 86,959.15 = 20,558.66 : x
  2. Step 2: Convert to fraction form
    57,989.17/86,959.15 = 20,558.66/x
  3. Step 3: Cross multiply
    57,989.17x = 86,959.15 × 20,558.66
  4. Step 4: Simplify right side
    57,989.17x = 1,787,763,495.95
  5. Step 5: Solve for x
    x = 1,787,763,495.95/57,989.17
  6. Step 6: Final answer
    x = 30,829.27

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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.