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Finding the Fourth Proportional to 40,705.22, 60,978.33 and 28,052.73

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Solution

The fourth proportional to 40,705.22, 60,978.33 and 28,052.73 is: 42,024.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,705.22 : 60,978.33 = 28,052.73 : x
  2. Step 2: Convert to fraction form
    40,705.22/60,978.33 = 28,052.73/x
  3. Step 3: Cross multiply
    40,705.22x = 60,978.33 × 28,052.73
  4. Step 4: Simplify right side
    40,705.22x = 1,710,608,627.34
  5. Step 5: Solve for x
    x = 1,710,608,627.34/40,705.22
  6. Step 6: Final answer
    x = 42,024.31

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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.