Home / 55,123.20-76,063.68-31,245.12

Finding the Fourth Proportional to 55,123.20, 76,063.68 and 31,245.12

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Solution

The fourth proportional to 55,123.20, 76,063.68 and 31,245.12 is: 43,114.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,123.20 : 76,063.68 = 31,245.12 : x
  2. Step 2: Convert to fraction form
    55,123.20/76,063.68 = 31,245.12/x
  3. Step 3: Cross multiply
    55,123.20x = 76,063.68 × 31,245.12
  4. Step 4: Simplify right side
    55,123.20x = 2,376,618,809.24
  5. Step 5: Solve for x
    x = 2,376,618,809.24/55,123.20
  6. Step 6: Final answer
    x = 43,114.67

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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.