Home / 78,626.23-108,504.32-42,816.39

Finding the Fourth Proportional to 78,626.23, 108,504.32 and 42,816.39

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Solution

The fourth proportional to 78,626.23, 108,504.32 and 42,816.39 is: 59,086.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,626.23 : 108,504.32 = 42,816.39 : x
  2. Step 2: Convert to fraction form
    78,626.23/108,504.32 = 42,816.39/x
  3. Step 3: Cross multiply
    78,626.23x = 108,504.32 × 42,816.39
  4. Step 4: Simplify right side
    78,626.23x = 4,645,763,281.80
  5. Step 5: Solve for x
    x = 4,645,763,281.80/78,626.23
  6. Step 6: Final answer
    x = 59,086.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.