Home / 52,090.44-78,135.66-12,647.58

Finding the Fourth Proportional to 52,090.44, 78,135.66 and 12,647.58

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Solution

The fourth proportional to 52,090.44, 78,135.66 and 12,647.58 is: 18,971.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,090.44 : 78,135.66 = 12,647.58 : x
  2. Step 2: Convert to fraction form
    52,090.44/78,135.66 = 12,647.58/x
  3. Step 3: Cross multiply
    52,090.44x = 78,135.66 × 12,647.58
  4. Step 4: Simplify right side
    52,090.44x = 988,227,010.70
  5. Step 5: Solve for x
    x = 988,227,010.70/52,090.44
  6. Step 6: Final answer
    x = 18,971.37

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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.