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Finding the Fourth Proportional to 66,511.88, 91,786.44 and 49,530.74

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Solution

The fourth proportional to 66,511.88, 91,786.44 and 49,530.74 is: 68,352.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,511.88 : 91,786.44 = 49,530.74 : x
  2. Step 2: Convert to fraction form
    66,511.88/91,786.44 = 49,530.74/x
  3. Step 3: Cross multiply
    66,511.88x = 91,786.44 × 49,530.74
  4. Step 4: Simplify right side
    66,511.88x = 4,546,249,836.23
  5. Step 5: Solve for x
    x = 4,546,249,836.23/66,511.88
  6. Step 6: Final answer
    x = 68,352.45

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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.