Home / 42,786.58-64,211.40-20,297.33

Finding the Fourth Proportional to 42,786.58, 64,211.40 and 20,297.33

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Solution

The fourth proportional to 42,786.58, 64,211.40 and 20,297.33 is: 30,460.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,786.58 : 64,211.40 = 20,297.33 : x
  2. Step 2: Convert to fraction form
    42,786.58/64,211.40 = 20,297.33/x
  3. Step 3: Cross multiply
    42,786.58x = 64,211.40 × 20,297.33
  4. Step 4: Simplify right side
    42,786.58x = 1,303,319,603.76
  5. Step 5: Solve for x
    x = 1,303,319,603.76/42,786.58
  6. Step 6: Final answer
    x = 30,460.95

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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.