Home / 45,721.68-68,511.60-31,709.04

Finding the Fourth Proportional to 45,721.68, 68,511.60 and 31,709.04

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Solution

The fourth proportional to 45,721.68, 68,511.60 and 31,709.04 is: 47,514.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,721.68 : 68,511.60 = 31,709.04 : x
  2. Step 2: Convert to fraction form
    45,721.68/68,511.60 = 31,709.04/x
  3. Step 3: Cross multiply
    45,721.68x = 68,511.60 × 31,709.04
  4. Step 4: Simplify right side
    45,721.68x = 2,172,437,064.86
  5. Step 5: Solve for x
    x = 2,172,437,064.86/45,721.68
  6. Step 6: Final answer
    x = 47,514.38

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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.