Home / 51,272.20-76,908.30-31,486.60

Finding the Fourth Proportional to 51,272.20, 76,908.30 and 31,486.60

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Solution

The fourth proportional to 51,272.20, 76,908.30 and 31,486.60 is: 47,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,272.20 : 76,908.30 = 31,486.60 : x
  2. Step 2: Convert to fraction form
    51,272.20/76,908.30 = 31,486.60/x
  3. Step 3: Cross multiply
    51,272.20x = 76,908.30 × 31,486.60
  4. Step 4: Simplify right side
    51,272.20x = 2,421,580,878.78
  5. Step 5: Solve for x
    x = 2,421,580,878.78/51,272.20
  6. Step 6: Final answer
    x = 47,229.90

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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.