Home / 76,278.42-114,419.37-20,124.20

Finding the Fourth Proportional to 76,278.42, 114,419.37 and 20,124.20

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Solution

The fourth proportional to 76,278.42, 114,419.37 and 20,124.20 is: 30,186.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,278.42 : 114,419.37 = 20,124.20 : x
  2. Step 2: Convert to fraction form
    76,278.42/114,419.37 = 20,124.20/x
  3. Step 3: Cross multiply
    76,278.42x = 114,419.37 × 20,124.20
  4. Step 4: Simplify right side
    76,278.42x = 2,302,597,713.66
  5. Step 5: Solve for x
    x = 2,302,597,713.66/76,278.42
  6. Step 6: Final answer
    x = 30,186.75

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1.5x scale

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.