Home / 56,716.20-85,074.30-19,780.20

Finding the Fourth Proportional to 56,716.20, 85,074.30 and 19,780.20

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Solution

The fourth proportional to 56,716.20, 85,074.30 and 19,780.20 is: 29,670.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,716.20 : 85,074.30 = 19,780.20 : x
  2. Step 2: Convert to fraction form
    56,716.20/85,074.30 = 19,780.20/x
  3. Step 3: Cross multiply
    56,716.20x = 85,074.30 × 19,780.20
  4. Step 4: Simplify right side
    56,716.20x = 1,682,786,668.86
  5. Step 5: Solve for x
    x = 1,682,786,668.86/56,716.20
  6. Step 6: Final answer
    x = 29,670.30

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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.