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Finding the Fourth Proportional to 29,978.12, 41,374.85 and 28,649.54

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Solution

The fourth proportional to 29,978.12, 41,374.85 and 28,649.54 is: 39,541.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,978.12 : 41,374.85 = 28,649.54 : x
  2. Step 2: Convert to fraction form
    29,978.12/41,374.85 = 28,649.54/x
  3. Step 3: Cross multiply
    29,978.12x = 41,374.85 × 28,649.54
  4. Step 4: Simplify right side
    29,978.12x = 1,185,370,069.95
  5. Step 5: Solve for x
    x = 1,185,370,069.95/29,978.12
  6. Step 6: Final answer
    x = 39,541.18

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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.