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Finding the Fourth Proportional to 56,755.79, 85,138.58 and 14,635.50

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Solution

The fourth proportional to 56,755.79, 85,138.58 and 14,635.50 is: 21,954.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,755.79 : 85,138.58 = 14,635.50 : x
  2. Step 2: Convert to fraction form
    56,755.79/85,138.58 = 14,635.50/x
  3. Step 3: Cross multiply
    56,755.79x = 85,138.58 × 14,635.50
  4. Step 4: Simplify right side
    56,755.79x = 1,246,045,687.59
  5. Step 5: Solve for x
    x = 1,246,045,687.59/56,755.79
  6. Step 6: Final answer
    x = 21,954.51

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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.