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Finding the Fourth Proportional to 65,479, 90,361.02 and 35,671

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Solution

The fourth proportional to 65,479, 90,361.02 and 35,671 is: 49,225.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,479 : 90,361.02 = 35,671 : x
  2. Step 2: Convert to fraction form
    65,479/90,361.02 = 35,671/x
  3. Step 3: Cross multiply
    65,479x = 90,361.02 × 35,671
  4. Step 4: Simplify right side
    65,479x = 3,223,267,944.42
  5. Step 5: Solve for x
    x = 3,223,267,944.42/65,479
  6. Step 6: Final answer
    x = 49,225.98

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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.