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Finding the Fourth Proportional to 63,213.66, 94,788.74 and 21,078.83

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Solution

The fourth proportional to 63,213.66, 94,788.74 and 21,078.83 is: 31,607.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,213.66 : 94,788.74 = 21,078.83 : x
  2. Step 2: Convert to fraction form
    63,213.66/94,788.74 = 21,078.83/x
  3. Step 3: Cross multiply
    63,213.66x = 94,788.74 × 21,078.83
  4. Step 4: Simplify right side
    63,213.66x = 1,998,035,736.37
  5. Step 5: Solve for x
    x = 1,998,035,736.37/63,213.66
  6. Step 6: Final answer
    x = 31,607.66

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1.5x scale

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.