Home / 78,623.26-108,496.82-42,813.18

Finding the Fourth Proportional to 78,623.26, 108,496.82 and 42,813.18

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Solution

The fourth proportional to 78,623.26, 108,496.82 and 42,813.18 is: 59,080.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,623.26 : 108,496.82 = 42,813.18 : x
  2. Step 2: Convert to fraction form
    78,623.26/108,496.82 = 42,813.18/x
  3. Step 3: Cross multiply
    78,623.26x = 108,496.82 × 42,813.18
  4. Step 4: Simplify right side
    78,623.26x = 4,645,093,991.12
  5. Step 5: Solve for x
    x = 4,645,093,991.12/78,623.26
  6. Step 6: Final answer
    x = 59,080.41

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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.