Home / 42,828.20-64,205.35-20,611.01

Finding the Fourth Proportional to 42,828.20, 64,205.35 and 20,611.01

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Solution

The fourth proportional to 42,828.20, 64,205.35 and 20,611.01 is: 30,898.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,828.20 : 64,205.35 = 20,611.01 : x
  2. Step 2: Convert to fraction form
    42,828.20/64,205.35 = 20,611.01/x
  3. Step 3: Cross multiply
    42,828.20x = 64,205.35 × 20,611.01
  4. Step 4: Simplify right side
    42,828.20x = 1,323,336,738.35
  5. Step 5: Solve for x
    x = 1,323,336,738.35/42,828.20
  6. Step 6: Final answer
    x = 30,898.73

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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.