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Finding the Fourth Proportional to 85,505.25, 117,997.25 and 47,783.01

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Solution

The fourth proportional to 85,505.25, 117,997.25 and 47,783.01 is: 65,940.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,505.25 : 117,997.25 = 47,783.01 : x
  2. Step 2: Convert to fraction form
    85,505.25/117,997.25 = 47,783.01/x
  3. Step 3: Cross multiply
    85,505.25x = 117,997.25 × 47,783.01
  4. Step 4: Simplify right side
    85,505.25x = 5,638,263,537.81
  5. Step 5: Solve for x
    x = 5,638,263,537.81/85,505.25
  6. Step 6: Final answer
    x = 65,940.55

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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.