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Finding the Fourth Proportional to 40,373.70, 60,571.35 and 28,709.70

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Solution

The fourth proportional to 40,373.70, 60,571.35 and 28,709.70 is: 43,072.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,373.70 : 60,571.35 = 28,709.70 : x
  2. Step 2: Convert to fraction form
    40,373.70/60,571.35 = 28,709.70/x
  3. Step 3: Cross multiply
    40,373.70x = 60,571.35 × 28,709.70
  4. Step 4: Simplify right side
    40,373.70x = 1,738,985,287.10
  5. Step 5: Solve for x
    x = 1,738,985,287.10/40,373.70
  6. Step 6: Final answer
    x = 43,072.23

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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.