Home / 42,911.75-64,382.75-19,217.36

Finding the Fourth Proportional to 42,911.75, 64,382.75 and 19,217.36

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Solution

The fourth proportional to 42,911.75, 64,382.75 and 19,217.36 is: 28,832.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,911.75 : 64,382.75 = 19,217.36 : x
  2. Step 2: Convert to fraction form
    42,911.75/64,382.75 = 19,217.36/x
  3. Step 3: Cross multiply
    42,911.75x = 64,382.75 × 19,217.36
  4. Step 4: Simplify right side
    42,911.75x = 1,237,266,484.54
  5. Step 5: Solve for x
    x = 1,237,266,484.54/42,911.75
  6. Step 6: Final answer
    x = 28,832.81

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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.