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Finding the Fourth Proportional to 78,686.36, 108,583.77 and 44,694.74

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Solution

The fourth proportional to 78,686.36, 108,583.77 and 44,694.74 is: 61,676.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,686.36 : 108,583.77 = 44,694.74 : x
  2. Step 2: Convert to fraction form
    78,686.36/108,583.77 = 44,694.74/x
  3. Step 3: Cross multiply
    78,686.36x = 108,583.77 × 44,694.74
  4. Step 4: Simplify right side
    78,686.36x = 4,853,122,825.45
  5. Step 5: Solve for x
    x = 4,853,122,825.45/78,686.36
  6. Step 6: Final answer
    x = 61,676.80

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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.