Home / 82,078.43-123,113.54-28,753.90

Finding the Fourth Proportional to 82,078.43, 123,113.54 and 28,753.90

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Solution

The fourth proportional to 82,078.43, 123,113.54 and 28,753.90 is: 43,129.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,078.43 : 123,113.54 = 28,753.90 : x
  2. Step 2: Convert to fraction form
    82,078.43/123,113.54 = 28,753.90/x
  3. Step 3: Cross multiply
    82,078.43x = 123,113.54 × 28,753.90
  4. Step 4: Simplify right side
    82,078.43x = 3,539,994,417.81
  5. Step 5: Solve for x
    x = 3,539,994,417.81/82,078.43
  6. Step 6: Final answer
    x = 43,129.41

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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.