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Finding the Fourth Proportional to 102,887.70, 141,990.52 and 57,562.97

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Solution

The fourth proportional to 102,887.70, 141,990.52 and 57,562.97 is: 79,439.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,887.70 : 141,990.52 = 57,562.97 : x
  2. Step 2: Convert to fraction form
    102,887.70/141,990.52 = 57,562.97/x
  3. Step 3: Cross multiply
    102,887.70x = 141,990.52 × 57,562.97
  4. Step 4: Simplify right side
    102,887.70x = 8,173,395,297.11
  5. Step 5: Solve for x
    x = 8,173,395,297.11/102,887.70
  6. Step 6: Final answer
    x = 79,439.97

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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.