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Finding the Fourth Proportional to 66,314.88, 91,514.53 and 36,100.42

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Solution

The fourth proportional to 66,314.88, 91,514.53 and 36,100.42 is: 49,818.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,314.88 : 91,514.53 = 36,100.42 : x
  2. Step 2: Convert to fraction form
    66,314.88/91,514.53 = 36,100.42/x
  3. Step 3: Cross multiply
    66,314.88x = 91,514.53 × 36,100.42
  4. Step 4: Simplify right side
    66,314.88x = 3,303,712,331.03
  5. Step 5: Solve for x
    x = 3,303,712,331.03/66,314.88
  6. Step 6: Final answer
    x = 49,818.57

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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.