Home / 55,493.12-76,579.76-31,621.20

Finding the Fourth Proportional to 55,493.12, 76,579.76 and 31,621.20

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Solution

The fourth proportional to 55,493.12, 76,579.76 and 31,621.20 is: 43,636.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,493.12 : 76,579.76 = 31,621.20 : x
  2. Step 2: Convert to fraction form
    55,493.12/76,579.76 = 31,621.20/x
  3. Step 3: Cross multiply
    55,493.12x = 76,579.76 × 31,621.20
  4. Step 4: Simplify right side
    55,493.12x = 2,421,543,906.91
  5. Step 5: Solve for x
    x = 2,421,543,906.91/55,493.12
  6. Step 6: Final answer
    x = 43,636.83

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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.