Home / 42,942.70-64,427.46-19,270.09

Finding the Fourth Proportional to 42,942.70, 64,427.46 and 19,270.09

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Solution

The fourth proportional to 42,942.70, 64,427.46 and 19,270.09 is: 28,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,942.70 : 64,427.46 = 19,270.09 : x
  2. Step 2: Convert to fraction form
    42,942.70/64,427.46 = 19,270.09/x
  3. Step 3: Cross multiply
    42,942.70x = 64,427.46 × 19,270.09
  4. Step 4: Simplify right side
    42,942.70x = 1,241,522,952.67
  5. Step 5: Solve for x
    x = 1,241,522,952.67/42,942.70
  6. Step 6: Final answer
    x = 28,911.15

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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.