Home / 76,625.76-114,937.20-21,220.32

Finding the Fourth Proportional to 76,625.76, 114,937.20 and 21,220.32

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Solution

The fourth proportional to 76,625.76, 114,937.20 and 21,220.32 is: 31,830.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,625.76 : 114,937.20 = 21,220.32 : x
  2. Step 2: Convert to fraction form
    76,625.76/114,937.20 = 21,220.32/x
  3. Step 3: Cross multiply
    76,625.76x = 114,937.20 × 21,220.32
  4. Step 4: Simplify right side
    76,625.76x = 2,439,004,163.90
  5. Step 5: Solve for x
    x = 2,439,004,163.90/76,625.76
  6. Step 6: Final answer
    x = 31,830.08

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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.