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Finding the Fourth Proportional to 65,224, 90,010.44 and 39,731.44

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Solution

The fourth proportional to 65,224, 90,010.44 and 39,731.44 is: 54,830.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,224 : 90,010.44 = 39,731.44 : x
  2. Step 2: Convert to fraction form
    65,224/90,010.44 = 39,731.44/x
  3. Step 3: Cross multiply
    65,224x = 90,010.44 × 39,731.44
  4. Step 4: Simplify right side
    65,224x = 3,576,244,396.23
  5. Step 5: Solve for x
    x = 3,576,244,396.23/65,224
  6. Step 6: Final answer
    x = 54,830.19

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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.