Home / 42,911.61-64,324.67-20,382.77

Finding the Fourth Proportional to 42,911.61, 64,324.67 and 20,382.77

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Solution

The fourth proportional to 42,911.61, 64,324.67 and 20,382.77 is: 30,553.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,911.61 : 64,324.67 = 20,382.77 : x
  2. Step 2: Convert to fraction form
    42,911.61/64,324.67 = 20,382.77/x
  3. Step 3: Cross multiply
    42,911.61x = 64,324.67 × 20,382.77
  4. Step 4: Simplify right side
    42,911.61x = 1,311,115,012.83
  5. Step 5: Solve for x
    x = 1,311,115,012.83/42,911.61
  6. Step 6: Final answer
    x = 30,553.86

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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.