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Finding the Fourth Proportional to 85,506.72, 118,001.44 and 47,783.36

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Solution

The fourth proportional to 85,506.72, 118,001.44 and 47,783.36 is: 65,942.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,506.72 : 118,001.44 = 47,783.36 : x
  2. Step 2: Convert to fraction form
    85,506.72/118,001.44 = 47,783.36/x
  3. Step 3: Cross multiply
    85,506.72x = 118,001.44 × 47,783.36
  4. Step 4: Simplify right side
    85,506.72x = 5,638,505,288.04
  5. Step 5: Solve for x
    x = 5,638,505,288.04/85,506.72
  6. Step 6: Final answer
    x = 65,942.25

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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.