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Finding the Fourth Proportional to 66,099.84, 91,218.72 and 35,885.22

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Solution

The fourth proportional to 66,099.84, 91,218.72 and 35,885.22 is: 49,522.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,099.84 : 91,218.72 = 35,885.22 : x
  2. Step 2: Convert to fraction form
    66,099.84/91,218.72 = 35,885.22/x
  3. Step 3: Cross multiply
    66,099.84x = 91,218.72 × 35,885.22
  4. Step 4: Simplify right side
    66,099.84x = 3,273,403,835.32
  5. Step 5: Solve for x
    x = 3,273,403,835.32/66,099.84
  6. Step 6: Final answer
    x = 49,522.11

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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.