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Finding the Fourth Proportional to 60,912.64, 91,376.28 and 21,461.60

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Solution

The fourth proportional to 60,912.64, 91,376.28 and 21,461.60 is: 32,194.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,912.64 : 91,376.28 = 21,461.60 : x
  2. Step 2: Convert to fraction form
    60,912.64/91,376.28 = 21,461.60/x
  3. Step 3: Cross multiply
    60,912.64x = 91,376.28 × 21,461.60
  4. Step 4: Simplify right side
    60,912.64x = 1,961,081,170.85
  5. Step 5: Solve for x
    x = 1,961,081,170.85/60,912.64
  6. Step 6: Final answer
    x = 32,194.98

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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.