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Finding the Fourth Proportional to 62,961.60, 94,442.40 and 21,408.60

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Solution

The fourth proportional to 62,961.60, 94,442.40 and 21,408.60 is: 32,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,961.60 : 94,442.40 = 21,408.60 : x
  2. Step 2: Convert to fraction form
    62,961.60/94,442.40 = 21,408.60/x
  3. Step 3: Cross multiply
    62,961.60x = 94,442.40 × 21,408.60
  4. Step 4: Simplify right side
    62,961.60x = 2,021,879,564.64
  5. Step 5: Solve for x
    x = 2,021,879,564.64/62,961.60
  6. Step 6: Final answer
    x = 32,112.90

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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.