Home / 82,912.22-124,368.32-20,582.72

Finding the Fourth Proportional to 82,912.22, 124,368.32 and 20,582.72

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Solution

The fourth proportional to 82,912.22, 124,368.32 and 20,582.72 is: 30,874.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,912.22 : 124,368.32 = 20,582.72 : x
  2. Step 2: Convert to fraction form
    82,912.22/124,368.32 = 20,582.72/x
  3. Step 3: Cross multiply
    82,912.22x = 124,368.32 × 20,582.72
  4. Step 4: Simplify right side
    82,912.22x = 2,559,837,737.05
  5. Step 5: Solve for x
    x = 2,559,837,737.05/82,912.22
  6. Step 6: Final answer
    x = 30,874.07

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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.