Home / 42,800.09-64,231.67-20,310.84

Finding the Fourth Proportional to 42,800.09, 64,231.67 and 20,310.84

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Solution

The fourth proportional to 42,800.09, 64,231.67 and 20,310.84 is: 30,481.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,800.09 : 64,231.67 = 20,310.84 : x
  2. Step 2: Convert to fraction form
    42,800.09/64,231.67 = 20,310.84/x
  3. Step 3: Cross multiply
    42,800.09x = 64,231.67 × 20,310.84
  4. Step 4: Simplify right side
    42,800.09x = 1,304,599,223.08
  5. Step 5: Solve for x
    x = 1,304,599,223.08/42,800.09
  6. Step 6: Final answer
    x = 30,481.23

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1.5x scale

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.