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Finding the Fourth Proportional to 40,752, 56,219.94 and 28,825.56

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Solution

The fourth proportional to 40,752, 56,219.94 and 28,825.56 is: 39,766.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,752 : 56,219.94 = 28,825.56 : x
  2. Step 2: Convert to fraction form
    40,752/56,219.94 = 28,825.56/x
  3. Step 3: Cross multiply
    40,752x = 56,219.94 × 28,825.56
  4. Step 4: Simplify right side
    40,752x = 1,620,571,253.67
  5. Step 5: Solve for x
    x = 1,620,571,253.67/40,752
  6. Step 6: Final answer
    x = 39,766.67

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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.