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Finding the Fourth Proportional to 71,101.44, 98,064 and 66,332.16

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Solution

The fourth proportional to 71,101.44, 98,064 and 66,332.16 is: 91,486.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,101.44 : 98,064 = 66,332.16 : x
  2. Step 2: Convert to fraction form
    71,101.44/98,064 = 66,332.16/x
  3. Step 3: Cross multiply
    71,101.44x = 98,064 × 66,332.16
  4. Step 4: Simplify right side
    71,101.44x = 6,504,796,938.24
  5. Step 5: Solve for x
    x = 6,504,796,938.24/71,101.44
  6. Step 6: Final answer
    x = 91,486.15

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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.