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Finding the Fourth Proportional to 66,933.84, 100,266.88 and 40,265.12

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Solution

The fourth proportional to 66,933.84, 100,266.88 and 40,265.12 is: 60,317.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,933.84 : 100,266.88 = 40,265.12 : x
  2. Step 2: Convert to fraction form
    66,933.84/100,266.88 = 40,265.12/x
  3. Step 3: Cross multiply
    66,933.84x = 100,266.88 × 40,265.12
  4. Step 4: Simplify right side
    66,933.84x = 4,037,257,955.23
  5. Step 5: Solve for x
    x = 4,037,257,955.23/66,933.84
  6. Step 6: Final answer
    x = 60,317.14

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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.