Home / 78,226.09-117,268.97-28,294.45

Finding the Fourth Proportional to 78,226.09, 117,268.97 and 28,294.45

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Solution

The fourth proportional to 78,226.09, 117,268.97 and 28,294.45 is: 42,416.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,226.09 : 117,268.97 = 28,294.45 : x
  2. Step 2: Convert to fraction form
    78,226.09/117,268.97 = 28,294.45/x
  3. Step 3: Cross multiply
    78,226.09x = 117,268.97 × 28,294.45
  4. Step 4: Simplify right side
    78,226.09x = 3,318,060,573.57
  5. Step 5: Solve for x
    x = 3,318,060,573.57/78,226.09
  6. Step 6: Final answer
    x = 42,416.29

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1.5x scale

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.