Home / 81,603.08-122,380.91-34,216.86

Finding the Fourth Proportional to 81,603.08, 122,380.91 and 34,216.86

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Solution

The fourth proportional to 81,603.08, 122,380.91 and 34,216.86 is: 51,315.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,603.08 : 122,380.91 = 34,216.86 : x
  2. Step 2: Convert to fraction form
    81,603.08/122,380.91 = 34,216.86/x
  3. Step 3: Cross multiply
    81,603.08x = 122,380.91 × 34,216.86
  4. Step 4: Simplify right side
    81,603.08x = 4,187,490,880.30
  5. Step 5: Solve for x
    x = 4,187,490,880.30/81,603.08
  6. Step 6: Final answer
    x = 51,315.35

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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.