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Finding the Fourth Proportional to 45,978.41, 68,967.77 and 12,697.74

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Solution

The fourth proportional to 45,978.41, 68,967.77 and 12,697.74 is: 19,046.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,978.41 : 68,967.77 = 12,697.74 : x
  2. Step 2: Convert to fraction form
    45,978.41/68,967.77 = 12,697.74/x
  3. Step 3: Cross multiply
    45,978.41x = 68,967.77 × 12,697.74
  4. Step 4: Simplify right side
    45,978.41x = 875,734,811.84
  5. Step 5: Solve for x
    x = 875,734,811.84/45,978.41
  6. Step 6: Final answer
    x = 19,046.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.