Home / 76,180.32-114,266.16-20,772

Finding the Fourth Proportional to 76,180.32, 114,266.16 and 20,772

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Solution

The fourth proportional to 76,180.32, 114,266.16 and 20,772 is: 31,156.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,180.32 : 114,266.16 = 20,772 : x
  2. Step 2: Convert to fraction form
    76,180.32/114,266.16 = 20,772/x
  3. Step 3: Cross multiply
    76,180.32x = 114,266.16 × 20,772
  4. Step 4: Simplify right side
    76,180.32x = 2,373,536,675.52
  5. Step 5: Solve for x
    x = 2,373,536,675.52/76,180.32
  6. Step 6: Final answer
    x = 31,156.82

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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.