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Finding the Fourth Proportional to 85,005.67, 127,523.10 and 25,847.32

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Solution

The fourth proportional to 85,005.67, 127,523.10 and 25,847.32 is: 38,775.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,005.67 : 127,523.10 = 25,847.32 : x
  2. Step 2: Convert to fraction form
    85,005.67/127,523.10 = 25,847.32/x
  3. Step 3: Cross multiply
    85,005.67x = 127,523.10 × 25,847.32
  4. Step 4: Simplify right side
    85,005.67x = 3,296,130,373.09
  5. Step 5: Solve for x
    x = 3,296,130,373.09/85,005.67
  6. Step 6: Final answer
    x = 38,775.42

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1.5x scale

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.