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Finding the Fourth Proportional to 61,218.56, 91,824.60 and 19,662.32

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Solution

The fourth proportional to 61,218.56, 91,824.60 and 19,662.32 is: 29,492.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,218.56 : 91,824.60 = 19,662.32 : x
  2. Step 2: Convert to fraction form
    61,218.56/91,824.60 = 19,662.32/x
  3. Step 3: Cross multiply
    61,218.56x = 91,824.60 × 19,662.32
  4. Step 4: Simplify right side
    61,218.56x = 1,805,484,669.07
  5. Step 5: Solve for x
    x = 1,805,484,669.07/61,218.56
  6. Step 6: Final answer
    x = 29,492.44

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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.