Home / 42,758.54-64,138.89-20,263.94

Finding the Fourth Proportional to 42,758.54, 64,138.89 and 20,263.94

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Solution

The fourth proportional to 42,758.54, 64,138.89 and 20,263.94 is: 30,396.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,758.54 : 64,138.89 = 20,263.94 : x
  2. Step 2: Convert to fraction form
    42,758.54/64,138.89 = 20,263.94/x
  3. Step 3: Cross multiply
    42,758.54x = 64,138.89 × 20,263.94
  4. Step 4: Simplify right side
    42,758.54x = 1,299,706,618.63
  5. Step 5: Solve for x
    x = 1,299,706,618.63/42,758.54
  6. Step 6: Final answer
    x = 30,396.42

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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.