Home / 76,580.16-114,872.40-21,176.16

Finding the Fourth Proportional to 76,580.16, 114,872.40 and 21,176.16

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Solution

The fourth proportional to 76,580.16, 114,872.40 and 21,176.16 is: 31,764.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,580.16 : 114,872.40 = 21,176.16 : x
  2. Step 2: Convert to fraction form
    76,580.16/114,872.40 = 21,176.16/x
  3. Step 3: Cross multiply
    76,580.16x = 114,872.40 × 21,176.16
  4. Step 4: Simplify right side
    76,580.16x = 2,432,556,321.98
  5. Step 5: Solve for x
    x = 2,432,556,321.98/76,580.16
  6. Step 6: Final answer
    x = 31,764.84

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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.