Home / 51,245.19-76,761.60-30,121.50

Finding the Fourth Proportional to 51,245.19, 76,761.60 and 30,121.50

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Solution

The fourth proportional to 51,245.19, 76,761.60 and 30,121.50 is: 45,119.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,245.19 : 76,761.60 = 30,121.50 : x
  2. Step 2: Convert to fraction form
    51,245.19/76,761.60 = 30,121.50/x
  3. Step 3: Cross multiply
    51,245.19x = 76,761.60 × 30,121.50
  4. Step 4: Simplify right side
    51,245.19x = 2,312,174,534.40
  5. Step 5: Solve for x
    x = 2,312,174,534.40/51,245.19
  6. Step 6: Final answer
    x = 45,119.84

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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.