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Finding the Fourth Proportional to 85,173.72, 127,677.96 and 47,751.72

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Solution

The fourth proportional to 85,173.72, 127,677.96 and 47,751.72 is: 71,581.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,173.72 : 127,677.96 = 47,751.72 : x
  2. Step 2: Convert to fraction form
    85,173.72/127,677.96 = 47,751.72/x
  3. Step 3: Cross multiply
    85,173.72x = 127,677.96 × 47,751.72
  4. Step 4: Simplify right side
    85,173.72x = 6,096,842,196.09
  5. Step 5: Solve for x
    x = 6,096,842,196.09/85,173.72
  6. Step 6: Final answer
    x = 71,581.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.