Home / 52,123.36-78,183.96-12,680.68

Finding the Fourth Proportional to 52,123.36, 78,183.96 and 12,680.68

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Solution

The fourth proportional to 52,123.36, 78,183.96 and 12,680.68 is: 19,020.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,123.36 : 78,183.96 = 12,680.68 : x
  2. Step 2: Convert to fraction form
    52,123.36/78,183.96 = 12,680.68/x
  3. Step 3: Cross multiply
    52,123.36x = 78,183.96 × 12,680.68
  4. Step 4: Simplify right side
    52,123.36x = 991,425,777.89
  5. Step 5: Solve for x
    x = 991,425,777.89/52,123.36
  6. Step 6: Final answer
    x = 19,020.76

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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.