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Finding the Fourth Proportional to 66,485.97, 99,738.90 and 21,492.27

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Solution

The fourth proportional to 66,485.97, 99,738.90 and 21,492.27 is: 32,241.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.97 : 99,738.90 = 21,492.27 : x
  2. Step 2: Convert to fraction form
    66,485.97/99,738.90 = 21,492.27/x
  3. Step 3: Cross multiply
    66,485.97x = 99,738.90 × 21,492.27
  4. Step 4: Simplify right side
    66,485.97x = 2,143,615,368.30
  5. Step 5: Solve for x
    x = 2,143,615,368.30/66,485.97
  6. Step 6: Final answer
    x = 32,241.62

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1.5x scale

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.