Home / 52,111.76-78,121.26-18,824.40

Finding the Fourth Proportional to 52,111.76, 78,121.26 and 18,824.40

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Solution

The fourth proportional to 52,111.76, 78,121.26 and 18,824.40 is: 28,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,111.76 : 78,121.26 = 18,824.40 : x
  2. Step 2: Convert to fraction form
    52,111.76/78,121.26 = 18,824.40/x
  3. Step 3: Cross multiply
    52,111.76x = 78,121.26 × 18,824.40
  4. Step 4: Simplify right side
    52,111.76x = 1,470,585,846.74
  5. Step 5: Solve for x
    x = 1,470,585,846.74/52,111.76
  6. Step 6: Final answer
    x = 28,219.85

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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.