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Finding the Fourth Proportional to 104,306.25, 143,945.45 and 58,991.01

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Solution

The fourth proportional to 104,306.25, 143,945.45 and 58,991.01 is: 81,409.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,306.25 : 143,945.45 = 58,991.01 : x
  2. Step 2: Convert to fraction form
    104,306.25/143,945.45 = 58,991.01/x
  3. Step 3: Cross multiply
    104,306.25x = 143,945.45 × 58,991.01
  4. Step 4: Simplify right side
    104,306.25x = 8,491,487,480.40
  5. Step 5: Solve for x
    x = 8,491,487,480.40/104,306.25
  6. Step 6: Final answer
    x = 81,409.19

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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.