Home / 52,123.56-78,131.62-20,520.80

Finding the Fourth Proportional to 52,123.56, 78,131.62 and 20,520.80

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Solution

The fourth proportional to 52,123.56, 78,131.62 and 20,520.80 is: 30,760.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,123.56 : 78,131.62 = 20,520.80 : x
  2. Step 2: Convert to fraction form
    52,123.56/78,131.62 = 20,520.80/x
  3. Step 3: Cross multiply
    52,123.56x = 78,131.62 × 20,520.80
  4. Step 4: Simplify right side
    52,123.56x = 1,603,323,495.43
  5. Step 5: Solve for x
    x = 1,603,323,495.43/52,123.56
  6. Step 6: Final answer
    x = 30,760.05

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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.