Home / 56,321.40-77,630.22-40,380.60

Finding the Fourth Proportional to 56,321.40, 77,630.22 and 40,380.60

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Solution

The fourth proportional to 56,321.40, 77,630.22 and 40,380.60 is: 55,658.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,321.40 : 77,630.22 = 40,380.60 : x
  2. Step 2: Convert to fraction form
    56,321.40/77,630.22 = 40,380.60/x
  3. Step 3: Cross multiply
    56,321.40x = 77,630.22 × 40,380.60
  4. Step 4: Simplify right side
    56,321.40x = 3,134,754,861.73
  5. Step 5: Solve for x
    x = 3,134,754,861.73/56,321.40
  6. Step 6: Final answer
    x = 55,658.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.