Home / 30,101.76-45,161.28-19,700.64

Finding the Fourth Proportional to 30,101.76, 45,161.28 and 19,700.64

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Solution

The fourth proportional to 30,101.76, 45,161.28 and 19,700.64 is: 29,556.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,101.76 : 45,161.28 = 19,700.64 : x
  2. Step 2: Convert to fraction form
    30,101.76/45,161.28 = 19,700.64/x
  3. Step 3: Cross multiply
    30,101.76x = 45,161.28 × 19,700.64
  4. Step 4: Simplify right side
    30,101.76x = 889,706,119.22
  5. Step 5: Solve for x
    x = 889,706,119.22/30,101.76
  6. Step 6: Final answer
    x = 29,556.61

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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.