Home / 78,476.37-108,314.58-51,621.53

Finding the Fourth Proportional to 78,476.37, 108,314.58 and 51,621.53

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Solution

The fourth proportional to 78,476.37, 108,314.58 and 51,621.53 is: 71,249.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,476.37 : 108,314.58 = 51,621.53 : x
  2. Step 2: Convert to fraction form
    78,476.37/108,314.58 = 51,621.53/x
  3. Step 3: Cross multiply
    78,476.37x = 108,314.58 × 51,621.53
  4. Step 4: Simplify right side
    78,476.37x = 5,591,363,992.92
  5. Step 5: Solve for x
    x = 5,591,363,992.92/78,476.37
  6. Step 6: Final answer
    x = 71,249.02

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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.