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Finding the Fourth Proportional to 66,518.52, 91,796.42 and 39,295.50

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Solution

The fourth proportional to 66,518.52, 91,796.42 and 39,295.50 is: 54,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,518.52 : 91,796.42 = 39,295.50 : x
  2. Step 2: Convert to fraction form
    66,518.52/91,796.42 = 39,295.50/x
  3. Step 3: Cross multiply
    66,518.52x = 91,796.42 × 39,295.50
  4. Step 4: Simplify right side
    66,518.52x = 3,607,186,222.11
  5. Step 5: Solve for x
    x = 3,607,186,222.11/66,518.52
  6. Step 6: Final answer
    x = 54,228.30

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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.