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Finding the Fourth Proportional to 40,343.70, 60,527.70 and 28,679.70

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Solution

The fourth proportional to 40,343.70, 60,527.70 and 28,679.70 is: 43,028.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,343.70 : 60,527.70 = 28,679.70 : x
  2. Step 2: Convert to fraction form
    40,343.70/60,527.70 = 28,679.70/x
  3. Step 3: Cross multiply
    40,343.70x = 60,527.70 × 28,679.70
  4. Step 4: Simplify right side
    40,343.70x = 1,735,916,277.69
  5. Step 5: Solve for x
    x = 1,735,916,277.69/40,343.70
  6. Step 6: Final answer
    x = 43,028.19

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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.