Home / 52,092.36-78,137.46-12,649.68

Finding the Fourth Proportional to 52,092.36, 78,137.46 and 12,649.68

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Solution

The fourth proportional to 52,092.36, 78,137.46 and 12,649.68 is: 18,974.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,092.36 : 78,137.46 = 12,649.68 : x
  2. Step 2: Convert to fraction form
    52,092.36/78,137.46 = 12,649.68/x
  3. Step 3: Cross multiply
    52,092.36x = 78,137.46 × 12,649.68
  4. Step 4: Simplify right side
    52,092.36x = 988,413,865.01
  5. Step 5: Solve for x
    x = 988,413,865.01/52,092.36
  6. Step 6: Final answer
    x = 18,974.26

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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.