Home / 66,388.48-91,636.32-39,535.36

Finding the Fourth Proportional to 66,388.48, 91,636.32 and 39,535.36

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Solution

The fourth proportional to 66,388.48, 91,636.32 and 39,535.36 is: 54,570.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,388.48 : 91,636.32 = 39,535.36 : x
  2. Step 2: Convert to fraction form
    66,388.48/91,636.32 = 39,535.36/x
  3. Step 3: Cross multiply
    66,388.48x = 91,636.32 × 39,535.36
  4. Step 4: Simplify right side
    66,388.48x = 3,622,874,900.28
  5. Step 5: Solve for x
    x = 3,622,874,900.28/66,388.48
  6. Step 6: Final answer
    x = 54,570.84

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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.