Home / 80,649.25-120,994.26-57,003.28

Finding the Fourth Proportional to 80,649.25, 120,994.26 and 57,003.28

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Solution

The fourth proportional to 80,649.25, 120,994.26 and 57,003.28 is: 85,519.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,649.25 : 120,994.26 = 57,003.28 : x
  2. Step 2: Convert to fraction form
    80,649.25/120,994.26 = 57,003.28/x
  3. Step 3: Cross multiply
    80,649.25x = 120,994.26 × 57,003.28
  4. Step 4: Simplify right side
    80,649.25x = 6,897,069,681.17
  5. Step 5: Solve for x
    x = 6,897,069,681.17/80,649.25
  6. Step 6: Final answer
    x = 85,519.33

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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.