Home / 56,181.60-77,621.76-55,628.64

Finding the Fourth Proportional to 56,181.60, 77,621.76 and 55,628.64

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Solution

The fourth proportional to 56,181.60, 77,621.76 and 55,628.64 is: 76,857.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,181.60 : 77,621.76 = 55,628.64 : x
  2. Step 2: Convert to fraction form
    56,181.60/77,621.76 = 55,628.64/x
  3. Step 3: Cross multiply
    56,181.60x = 77,621.76 × 55,628.64
  4. Step 4: Simplify right side
    56,181.60x = 4,317,992,943.21
  5. Step 5: Solve for x
    x = 4,317,992,943.21/56,181.60
  6. Step 6: Final answer
    x = 76,857.78

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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.