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Finding the Fourth Proportional to 65,651.36, 98,492.56 and 21,278.04

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Solution

The fourth proportional to 65,651.36, 98,492.56 and 21,278.04 is: 31,922.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,651.36 : 98,492.56 = 21,278.04 : x
  2. Step 2: Convert to fraction form
    65,651.36/98,492.56 = 21,278.04/x
  3. Step 3: Cross multiply
    65,651.36x = 98,492.56 × 21,278.04
  4. Step 4: Simplify right side
    65,651.36x = 2,095,728,631.38
  5. Step 5: Solve for x
    x = 2,095,728,631.38/65,651.36
  6. Step 6: Final answer
    x = 31,922.09

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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.