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Finding the Fourth Proportional to 66,551.01, 91,829.55 and 39,323.30

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Solution

The fourth proportional to 66,551.01, 91,829.55 and 39,323.30 is: 54,259.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,551.01 : 91,829.55 = 39,323.30 : x
  2. Step 2: Convert to fraction form
    66,551.01/91,829.55 = 39,323.30/x
  3. Step 3: Cross multiply
    66,551.01x = 91,829.55 × 39,323.30
  4. Step 4: Simplify right side
    66,551.01x = 3,611,040,943.52
  5. Step 5: Solve for x
    x = 3,611,040,943.52/66,551.01
  6. Step 6: Final answer
    x = 54,259.75

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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.