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Finding the Fourth Proportional to 66,272.76, 91,462.86 and 49,476.60

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Solution

The fourth proportional to 66,272.76, 91,462.86 and 49,476.60 is: 68,282.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,272.76 : 91,462.86 = 49,476.60 : x
  2. Step 2: Convert to fraction form
    66,272.76/91,462.86 = 49,476.60/x
  3. Step 3: Cross multiply
    66,272.76x = 91,462.86 × 49,476.60
  4. Step 4: Simplify right side
    66,272.76x = 4,525,271,339.08
  5. Step 5: Solve for x
    x = 4,525,271,339.08/66,272.76
  6. Step 6: Final answer
    x = 68,282.52

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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.