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Finding the Fourth Proportional to 84,040.40, 115,982.04 and 46,314.80

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Solution

The fourth proportional to 84,040.40, 115,982.04 and 46,314.80 is: 63,917.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,040.40 : 115,982.04 = 46,314.80 : x
  2. Step 2: Convert to fraction form
    84,040.40/115,982.04 = 46,314.80/x
  3. Step 3: Cross multiply
    84,040.40x = 115,982.04 × 46,314.80
  4. Step 4: Simplify right side
    84,040.40x = 5,371,684,986.19
  5. Step 5: Solve for x
    x = 5,371,684,986.19/84,040.40
  6. Step 6: Final answer
    x = 63,917.89

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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.