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Finding the Fourth Proportional to 66,318.57, 91,492.53 and 40,817.22

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Solution

The fourth proportional to 66,318.57, 91,492.53 and 40,817.22 is: 56,311.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,318.57 : 91,492.53 = 40,817.22 : x
  2. Step 2: Convert to fraction form
    66,318.57/91,492.53 = 40,817.22/x
  3. Step 3: Cross multiply
    66,318.57x = 91,492.53 × 40,817.22
  4. Step 4: Simplify right side
    66,318.57x = 3,734,470,725.37
  5. Step 5: Solve for x
    x = 3,734,470,725.37/66,318.57
  6. Step 6: Final answer
    x = 56,311.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.