Home / 76,919.68-115,300.32-55,807.12

Finding the Fourth Proportional to 76,919.68, 115,300.32 and 55,807.12

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Solution

The fourth proportional to 76,919.68, 115,300.32 and 55,807.12 is: 83,653.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,919.68 : 115,300.32 = 55,807.12 : x
  2. Step 2: Convert to fraction form
    76,919.68/115,300.32 = 55,807.12/x
  3. Step 3: Cross multiply
    76,919.68x = 115,300.32 × 55,807.12
  4. Step 4: Simplify right side
    76,919.68x = 6,434,578,794.28
  5. Step 5: Solve for x
    x = 6,434,578,794.28/76,919.68
  6. Step 6: Final answer
    x = 83,653.22

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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.