Home / 109,649.30-164,478.81-30,761.78

Finding the Fourth Proportional to 109,649.30, 164,478.81 and 30,761.78

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Solution

The fourth proportional to 109,649.30, 164,478.81 and 30,761.78 is: 46,144.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,649.30 : 164,478.81 = 30,761.78 : x
  2. Step 2: Convert to fraction form
    109,649.30/164,478.81 = 30,761.78/x
  3. Step 3: Cross multiply
    109,649.30x = 164,478.81 × 30,761.78
  4. Step 4: Simplify right side
    109,649.30x = 5,059,660,967.88
  5. Step 5: Solve for x
    x = 5,059,660,967.88/109,649.30
  6. Step 6: Final answer
    x = 46,144.03

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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.