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Finding the Fourth Proportional to 43,487.44, 65,210.06 and 21,274.80

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Solution

The fourth proportional to 43,487.44, 65,210.06 and 21,274.80 is: 31,901.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,487.44 : 65,210.06 = 21,274.80 : x
  2. Step 2: Convert to fraction form
    43,487.44/65,210.06 = 21,274.80/x
  3. Step 3: Cross multiply
    43,487.44x = 65,210.06 × 21,274.80
  4. Step 4: Simplify right side
    43,487.44x = 1,387,330,984.49
  5. Step 5: Solve for x
    x = 1,387,330,984.49/43,487.44
  6. Step 6: Final answer
    x = 31,901.88

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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.