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Finding the Fourth Proportional to 43,274.70, 64,802.70 and 28,403.10

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Solution

The fourth proportional to 43,274.70, 64,802.70 and 28,403.10 is: 42,532.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,274.70 : 64,802.70 = 28,403.10 : x
  2. Step 2: Convert to fraction form
    43,274.70/64,802.70 = 28,403.10/x
  3. Step 3: Cross multiply
    43,274.70x = 64,802.70 × 28,403.10
  4. Step 4: Simplify right side
    43,274.70x = 1,840,597,568.37
  5. Step 5: Solve for x
    x = 1,840,597,568.37/43,274.70
  6. Step 6: Final answer
    x = 42,532.88

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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.