Home / 51,181.20-76,820.40-31,498.20

Finding the Fourth Proportional to 51,181.20, 76,820.40 and 31,498.20

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Solution

The fourth proportional to 51,181.20, 76,820.40 and 31,498.20 is: 47,277.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,181.20 : 76,820.40 = 31,498.20 : x
  2. Step 2: Convert to fraction form
    51,181.20/76,820.40 = 31,498.20/x
  3. Step 3: Cross multiply
    51,181.20x = 76,820.40 × 31,498.20
  4. Step 4: Simplify right side
    51,181.20x = 2,419,704,323.28
  5. Step 5: Solve for x
    x = 2,419,704,323.28/51,181.20
  6. Step 6: Final answer
    x = 47,277.21

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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.