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Finding the Fourth Proportional to 65,291.84, 90,104.64 and 36,996.56

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Solution

The fourth proportional to 65,291.84, 90,104.64 and 36,996.56 is: 51,056.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,291.84 : 90,104.64 = 36,996.56 : x
  2. Step 2: Convert to fraction form
    65,291.84/90,104.64 = 36,996.56/x
  3. Step 3: Cross multiply
    65,291.84x = 90,104.64 × 36,996.56
  4. Step 4: Simplify right side
    65,291.84x = 3,333,561,720.04
  5. Step 5: Solve for x
    x = 3,333,561,720.04/65,291.84
  6. Step 6: Final answer
    x = 51,056.33

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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.