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Finding the Fourth Proportional to 66,287.67, 91,477.17 and 36,072.96

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Solution

The fourth proportional to 66,287.67, 91,477.17 and 36,072.96 is: 49,780.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,287.67 : 91,477.17 = 36,072.96 : x
  2. Step 2: Convert to fraction form
    66,287.67/91,477.17 = 36,072.96/x
  3. Step 3: Cross multiply
    66,287.67x = 91,477.17 × 36,072.96
  4. Step 4: Simplify right side
    66,287.67x = 3,299,852,294.32
  5. Step 5: Solve for x
    x = 3,299,852,294.32/66,287.67
  6. Step 6: Final answer
    x = 49,780.79

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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.