Home / 76,426.85-114,642.86-20,272.63

Finding the Fourth Proportional to 76,426.85, 114,642.86 and 20,272.63

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Solution

The fourth proportional to 76,426.85, 114,642.86 and 20,272.63 is: 30,409.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,426.85 : 114,642.86 = 20,272.63 : x
  2. Step 2: Convert to fraction form
    76,426.85/114,642.86 = 20,272.63/x
  3. Step 3: Cross multiply
    76,426.85x = 114,642.86 × 20,272.63
  4. Step 4: Simplify right side
    76,426.85x = 2,324,112,282.92
  5. Step 5: Solve for x
    x = 2,324,112,282.92/76,426.85
  6. Step 6: Final answer
    x = 30,409.63

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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.