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Finding the Fourth Proportional to 66,506.58, 91,747.37 and 45,003.87

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Solution

The fourth proportional to 66,506.58, 91,747.37 and 45,003.87 is: 62,083.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,506.58 : 91,747.37 = 45,003.87 : x
  2. Step 2: Convert to fraction form
    66,506.58/91,747.37 = 45,003.87/x
  3. Step 3: Cross multiply
    66,506.58x = 91,747.37 × 45,003.87
  4. Step 4: Simplify right side
    66,506.58x = 4,128,986,028.57
  5. Step 5: Solve for x
    x = 4,128,986,028.57/66,506.58
  6. Step 6: Final answer
    x = 62,083.88

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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.