Home / 53,409.27-80,114.10-20,120.40

Finding the Fourth Proportional to 53,409.27, 80,114.10 and 20,120.40

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Solution

The fourth proportional to 53,409.27, 80,114.10 and 20,120.40 is: 30,180.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,409.27 : 80,114.10 = 20,120.40 : x
  2. Step 2: Convert to fraction form
    53,409.27/80,114.10 = 20,120.40/x
  3. Step 3: Cross multiply
    53,409.27x = 80,114.10 × 20,120.40
  4. Step 4: Simplify right side
    53,409.27x = 1,611,927,737.64
  5. Step 5: Solve for x
    x = 1,611,927,737.64/53,409.27
  6. Step 6: Final answer
    x = 30,180.67

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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.