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Finding the Fourth Proportional to 60,558.40, 90,845.70 and 21,127.60

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Solution

The fourth proportional to 60,558.40, 90,845.70 and 21,127.60 is: 31,694.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,558.40 : 90,845.70 = 21,127.60 : x
  2. Step 2: Convert to fraction form
    60,558.40/90,845.70 = 21,127.60/x
  3. Step 3: Cross multiply
    60,558.40x = 90,845.70 × 21,127.60
  4. Step 4: Simplify right side
    60,558.40x = 1,919,351,611.32
  5. Step 5: Solve for x
    x = 1,919,351,611.32/60,558.40
  6. Step 6: Final answer
    x = 31,694.23

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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.