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Finding the Fourth Proportional to 56,556, 78,049.44 and 31,404.96

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Solution

The fourth proportional to 56,556, 78,049.44 and 31,404.96 is: 43,340.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,556 : 78,049.44 = 31,404.96 : x
  2. Step 2: Convert to fraction form
    56,556/78,049.44 = 31,404.96/x
  3. Step 3: Cross multiply
    56,556x = 78,049.44 × 31,404.96
  4. Step 4: Simplify right side
    56,556x = 2,451,139,541.22
  5. Step 5: Solve for x
    x = 2,451,139,541.22/56,556
  6. Step 6: Final answer
    x = 43,340.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.