Home / 76,556.16-114,836.40-21,152.16

Finding the Fourth Proportional to 76,556.16, 114,836.40 and 21,152.16

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Solution

The fourth proportional to 76,556.16, 114,836.40 and 21,152.16 is: 31,728.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,556.16 : 114,836.40 = 21,152.16 : x
  2. Step 2: Convert to fraction form
    76,556.16/114,836.40 = 21,152.16/x
  3. Step 3: Cross multiply
    76,556.16x = 114,836.40 × 21,152.16
  4. Step 4: Simplify right side
    76,556.16x = 2,429,037,906.62
  5. Step 5: Solve for x
    x = 2,429,037,906.62/76,556.16
  6. Step 6: Final answer
    x = 31,728.84

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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.