Home / 78,994.08-109,013.88-47,181.30

Finding the Fourth Proportional to 78,994.08, 109,013.88 and 47,181.30

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Solution

The fourth proportional to 78,994.08, 109,013.88 and 47,181.30 is: 65,111.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,994.08 : 109,013.88 = 47,181.30 : x
  2. Step 2: Convert to fraction form
    78,994.08/109,013.88 = 47,181.30/x
  3. Step 3: Cross multiply
    78,994.08x = 109,013.88 × 47,181.30
  4. Step 4: Simplify right side
    78,994.08x = 5,143,416,576.44
  5. Step 5: Solve for x
    x = 5,143,416,576.44/78,994.08
  6. Step 6: Final answer
    x = 65,111.42

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1.5x scale

Why These Related Problems?

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