Home / 78,896.16-108,872.40-43,085.60

Finding the Fourth Proportional to 78,896.16, 108,872.40 and 43,085.60

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Solution

The fourth proportional to 78,896.16, 108,872.40 and 43,085.60 is: 59,455.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,896.16 : 108,872.40 = 43,085.60 : x
  2. Step 2: Convert to fraction form
    78,896.16/108,872.40 = 43,085.60/x
  3. Step 3: Cross multiply
    78,896.16x = 108,872.40 × 43,085.60
  4. Step 4: Simplify right side
    78,896.16x = 4,690,832,677.44
  5. Step 5: Solve for x
    x = 4,690,832,677.44/78,896.16
  6. Step 6: Final answer
    x = 59,455.78

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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.