Home / 51,378.68-77,073.15-13,939.37

Finding the Fourth Proportional to 51,378.68, 77,073.15 and 13,939.37

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Solution

The fourth proportional to 51,378.68, 77,073.15 and 13,939.37 is: 20,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,378.68 : 77,073.15 = 13,939.37 : x
  2. Step 2: Convert to fraction form
    51,378.68/77,073.15 = 13,939.37/x
  3. Step 3: Cross multiply
    51,378.68x = 77,073.15 × 13,939.37
  4. Step 4: Simplify right side
    51,378.68x = 1,074,351,154.92
  5. Step 5: Solve for x
    x = 1,074,351,154.92/51,378.68
  6. Step 6: Final answer
    x = 20,910.45

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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.