Home / 42,839.70-64,226.60-21,762.42

Finding the Fourth Proportional to 42,839.70, 64,226.60 and 21,762.42

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Solution

The fourth proportional to 42,839.70, 64,226.60 and 21,762.42 is: 32,626.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,839.70 : 64,226.60 = 21,762.42 : x
  2. Step 2: Convert to fraction form
    42,839.70/64,226.60 = 21,762.42/x
  3. Step 3: Cross multiply
    42,839.70x = 64,226.60 × 21,762.42
  4. Step 4: Simplify right side
    42,839.70x = 1,397,726,244.37
  5. Step 5: Solve for x
    x = 1,397,726,244.37/42,839.70
  6. Step 6: Final answer
    x = 32,626.89

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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.