Home / 78,212.08-117,051.18-49,734.64

Finding the Fourth Proportional to 78,212.08, 117,051.18 and 49,734.64

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Solution

The fourth proportional to 78,212.08, 117,051.18 and 49,734.64 is: 74,432.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,212.08 : 117,051.18 = 49,734.64 : x
  2. Step 2: Convert to fraction form
    78,212.08/117,051.18 = 49,734.64/x
  3. Step 3: Cross multiply
    78,212.08x = 117,051.18 × 49,734.64
  4. Step 4: Simplify right side
    78,212.08x = 5,821,498,298.88
  5. Step 5: Solve for x
    x = 5,821,498,298.88/78,212.08
  6. Step 6: Final answer
    x = 74,432.21

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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.