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Finding the Fourth Proportional to 66,172.19, 91,317.44 and 35,957.51

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Solution

The fourth proportional to 66,172.19, 91,317.44 and 35,957.51 is: 49,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172.19 : 91,317.44 = 35,957.51 : x
  2. Step 2: Convert to fraction form
    66,172.19/91,317.44 = 35,957.51/x
  3. Step 3: Cross multiply
    66,172.19x = 91,317.44 × 35,957.51
  4. Step 4: Simplify right side
    66,172.19x = 3,283,548,080.16
  5. Step 5: Solve for x
    x = 3,283,548,080.16/66,172.19
  6. Step 6: Final answer
    x = 49,621.27

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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.