Home / 51,323.90-76,969.85-20,168.70

Finding the Fourth Proportional to 51,323.90, 76,969.85 and 20,168.70

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Solution

The fourth proportional to 51,323.90, 76,969.85 and 20,168.70 is: 30,246.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,323.90 : 76,969.85 = 20,168.70 : x
  2. Step 2: Convert to fraction form
    51,323.90/76,969.85 = 20,168.70/x
  3. Step 3: Cross multiply
    51,323.90x = 76,969.85 × 20,168.70
  4. Step 4: Simplify right side
    51,323.90x = 1,552,381,813.70
  5. Step 5: Solve for x
    x = 1,552,381,813.70/51,323.90
  6. Step 6: Final answer
    x = 30,246.76

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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.