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Finding the Fourth Proportional to 66,532.84, 91,813.04 and 39,661.52

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Solution

The fourth proportional to 66,532.84, 91,813.04 and 39,661.52 is: 54,731.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,532.84 : 91,813.04 = 39,661.52 : x
  2. Step 2: Convert to fraction form
    66,532.84/91,813.04 = 39,661.52/x
  3. Step 3: Cross multiply
    66,532.84x = 91,813.04 × 39,661.52
  4. Step 4: Simplify right side
    66,532.84x = 3,641,444,722.22
  5. Step 5: Solve for x
    x = 3,641,444,722.22/66,532.84
  6. Step 6: Final answer
    x = 54,731.54

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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.