Home / 83,418.36-115,112.88-45,685.32

Finding the Fourth Proportional to 83,418.36, 115,112.88 and 45,685.32

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Solution

The fourth proportional to 83,418.36, 115,112.88 and 45,685.32 is: 63,043.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,418.36 : 115,112.88 = 45,685.32 : x
  2. Step 2: Convert to fraction form
    83,418.36/115,112.88 = 45,685.32/x
  3. Step 3: Cross multiply
    83,418.36x = 115,112.88 × 45,685.32
  4. Step 4: Simplify right side
    83,418.36x = 5,258,968,758.92
  5. Step 5: Solve for x
    x = 5,258,968,758.92/83,418.36
  6. Step 6: Final answer
    x = 63,043.30

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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.