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Finding the Fourth Proportional to 66,506.81, 91,776.54 and 36,291.38

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Solution

The fourth proportional to 66,506.81, 91,776.54 and 36,291.38 is: 50,080.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,506.81 : 91,776.54 = 36,291.38 : x
  2. Step 2: Convert to fraction form
    66,506.81/91,776.54 = 36,291.38/x
  3. Step 3: Cross multiply
    66,506.81x = 91,776.54 × 36,291.38
  4. Step 4: Simplify right side
    66,506.81x = 3,330,696,647.89
  5. Step 5: Solve for x
    x = 3,330,696,647.89/66,506.81
  6. Step 6: Final answer
    x = 50,080.54

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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.