Home / 78,961.16-108,963.30-43,151.60

Finding the Fourth Proportional to 78,961.16, 108,963.30 and 43,151.60

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Solution

The fourth proportional to 78,961.16, 108,963.30 and 43,151.60 is: 59,547.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,961.16 : 108,963.30 = 43,151.60 : x
  2. Step 2: Convert to fraction form
    78,961.16/108,963.30 = 43,151.60/x
  3. Step 3: Cross multiply
    78,961.16x = 108,963.30 × 43,151.60
  4. Step 4: Simplify right side
    78,961.16x = 4,701,940,736.28
  5. Step 5: Solve for x
    x = 4,701,940,736.28/78,961.16
  6. Step 6: Final answer
    x = 59,547.51

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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.