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Finding the Fourth Proportional to 66,441.31, 91,699.53 and 39,599.39

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Solution

The fourth proportional to 66,441.31, 91,699.53 and 39,599.39 is: 54,653.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,441.31 : 91,699.53 = 39,599.39 : x
  2. Step 2: Convert to fraction form
    66,441.31/91,699.53 = 39,599.39/x
  3. Step 3: Cross multiply
    66,441.31x = 91,699.53 × 39,599.39
  4. Step 4: Simplify right side
    66,441.31x = 3,631,245,274.13
  5. Step 5: Solve for x
    x = 3,631,245,274.13/66,441.31
  6. Step 6: Final answer
    x = 54,653.42

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1.5x scale

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.