Home / 78,244.27-117,338.61-28,311.41

Finding the Fourth Proportional to 78,244.27, 117,338.61 and 28,311.41

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Solution

The fourth proportional to 78,244.27, 117,338.61 and 28,311.41 is: 42,457.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,244.27 : 117,338.61 = 28,311.41 : x
  2. Step 2: Convert to fraction form
    78,244.27/117,338.61 = 28,311.41/x
  3. Step 3: Cross multiply
    78,244.27x = 117,338.61 × 28,311.41
  4. Step 4: Simplify right side
    78,244.27x = 3,322,021,496.54
  5. Step 5: Solve for x
    x = 3,322,021,496.54/78,244.27
  6. Step 6: Final answer
    x = 42,457.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.