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Finding the Fourth Proportional to 56,978.90, 85,468.41 and 14,858.94

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Solution

The fourth proportional to 56,978.90, 85,468.41 and 14,858.94 is: 22,288.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,978.90 : 85,468.41 = 14,858.94 : x
  2. Step 2: Convert to fraction form
    56,978.90/85,468.41 = 14,858.94/x
  3. Step 3: Cross multiply
    56,978.90x = 85,468.41 × 14,858.94
  4. Step 4: Simplify right side
    56,978.90x = 1,269,969,976.09
  5. Step 5: Solve for x
    x = 1,269,969,976.09/56,978.90
  6. Step 6: Final answer
    x = 22,288.43

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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.