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Finding the Fourth Proportional to 66,563.89, 91,858.34 and 36,349.45

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Solution

The fourth proportional to 66,563.89, 91,858.34 and 36,349.45 is: 50,162.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,563.89 : 91,858.34 = 36,349.45 : x
  2. Step 2: Convert to fraction form
    66,563.89/91,858.34 = 36,349.45/x
  3. Step 3: Cross multiply
    66,563.89x = 91,858.34 × 36,349.45
  4. Step 4: Simplify right side
    66,563.89x = 3,338,999,955.17
  5. Step 5: Solve for x
    x = 3,338,999,955.17/66,563.89
  6. Step 6: Final answer
    x = 50,162.33

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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.