Home / 78,327.29-117,490.94-28,396.05

Finding the Fourth Proportional to 78,327.29, 117,490.94 and 28,396.05

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Solution

The fourth proportional to 78,327.29, 117,490.94 and 28,396.05 is: 42,594.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,327.29 : 117,490.94 = 28,396.05 : x
  2. Step 2: Convert to fraction form
    78,327.29/117,490.94 = 28,396.05/x
  3. Step 3: Cross multiply
    78,327.29x = 117,490.94 × 28,396.05
  4. Step 4: Simplify right side
    78,327.29x = 3,336,278,464.81
  5. Step 5: Solve for x
    x = 3,336,278,464.81/78,327.29
  6. Step 6: Final answer
    x = 42,594.08

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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.