Home / 78,694.02-117,994.14-31,283.64

Finding the Fourth Proportional to 78,694.02, 117,994.14 and 31,283.64

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Solution

The fourth proportional to 78,694.02, 117,994.14 and 31,283.64 is: 46,906.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,694.02 : 117,994.14 = 31,283.64 : x
  2. Step 2: Convert to fraction form
    78,694.02/117,994.14 = 31,283.64/x
  3. Step 3: Cross multiply
    78,694.02x = 117,994.14 × 31,283.64
  4. Step 4: Simplify right side
    78,694.02x = 3,691,286,197.87
  5. Step 5: Solve for x
    x = 3,691,286,197.87/78,694.02
  6. Step 6: Final answer
    x = 46,906.82

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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.