Home / 51,271.20-76,906.80-31,485.60

Finding the Fourth Proportional to 51,271.20, 76,906.80 and 31,485.60

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Solution

The fourth proportional to 51,271.20, 76,906.80 and 31,485.60 is: 47,228.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,271.20 : 76,906.80 = 31,485.60 : x
  2. Step 2: Convert to fraction form
    51,271.20/76,906.80 = 31,485.60/x
  3. Step 3: Cross multiply
    51,271.20x = 76,906.80 × 31,485.60
  4. Step 4: Simplify right side
    51,271.20x = 2,421,456,742.08
  5. Step 5: Solve for x
    x = 2,421,456,742.08/51,271.20
  6. Step 6: Final answer
    x = 47,228.40

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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.