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Finding the Fourth Proportional to 66,483.40, 91,748.16 and 36,268.72

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Solution

The fourth proportional to 66,483.40, 91,748.16 and 36,268.72 is: 50,051.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,483.40 : 91,748.16 = 36,268.72 : x
  2. Step 2: Convert to fraction form
    66,483.40/91,748.16 = 36,268.72/x
  3. Step 3: Cross multiply
    66,483.40x = 91,748.16 × 36,268.72
  4. Step 4: Simplify right side
    66,483.40x = 3,327,588,325.56
  5. Step 5: Solve for x
    x = 3,327,588,325.56/66,483.40
  6. Step 6: Final answer
    x = 50,051.42

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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.