Home / 98,961.24-136,584.80-56,519.78

Finding the Fourth Proportional to 98,961.24, 136,584.80 and 56,519.78

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Solution

The fourth proportional to 98,961.24, 136,584.80 and 56,519.78 is: 78,007.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,961.24 : 136,584.80 = 56,519.78 : x
  2. Step 2: Convert to fraction form
    98,961.24/136,584.80 = 56,519.78/x
  3. Step 3: Cross multiply
    98,961.24x = 136,584.80 × 56,519.78
  4. Step 4: Simplify right side
    98,961.24x = 7,719,742,093.77
  5. Step 5: Solve for x
    x = 7,719,742,093.77/98,961.24
  6. Step 6: Final answer
    x = 78,007.73

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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.