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Finding the Fourth Proportional to 66,245.60, 99,334.20 and 19,492.40

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Solution

The fourth proportional to 66,245.60, 99,334.20 and 19,492.40 is: 29,228.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,245.60 : 99,334.20 = 19,492.40 : x
  2. Step 2: Convert to fraction form
    66,245.60/99,334.20 = 19,492.40/x
  3. Step 3: Cross multiply
    66,245.60x = 99,334.20 × 19,492.40
  4. Step 4: Simplify right side
    66,245.60x = 1,936,261,960.08
  5. Step 5: Solve for x
    x = 1,936,261,960.08/66,245.60
  6. Step 6: Final answer
    x = 29,228.54

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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.