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Finding the Fourth Proportional to 66,584.63, 91,889.49 and 38,290.32

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Solution

The fourth proportional to 66,584.63, 91,889.49 and 38,290.32 is: 52,842.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,584.63 : 91,889.49 = 38,290.32 : x
  2. Step 2: Convert to fraction form
    66,584.63/91,889.49 = 38,290.32/x
  3. Step 3: Cross multiply
    66,584.63x = 91,889.49 × 38,290.32
  4. Step 4: Simplify right side
    66,584.63x = 3,518,477,325.84
  5. Step 5: Solve for x
    x = 3,518,477,325.84/66,584.63
  6. Step 6: Final answer
    x = 52,842.19

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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.