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Finding the Fourth Proportional to 63,028.40, 94,557.28 and 20,905.40

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Solution

The fourth proportional to 63,028.40, 94,557.28 and 20,905.40 is: 31,362.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,028.40 : 94,557.28 = 20,905.40 : x
  2. Step 2: Convert to fraction form
    63,028.40/94,557.28 = 20,905.40/x
  3. Step 3: Cross multiply
    63,028.40x = 94,557.28 × 20,905.40
  4. Step 4: Simplify right side
    63,028.40x = 1,976,757,236.26
  5. Step 5: Solve for x
    x = 1,976,757,236.26/63,028.40
  6. Step 6: Final answer
    x = 31,362.96

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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.