Home / 51,900.22-77,879.92-20,312.84

Finding the Fourth Proportional to 51,900.22, 77,879.92 and 20,312.84

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Solution

The fourth proportional to 51,900.22, 77,879.92 and 20,312.84 is: 30,480.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,900.22 : 77,879.92 = 20,312.84 : x
  2. Step 2: Convert to fraction form
    51,900.22/77,879.92 = 20,312.84/x
  3. Step 3: Cross multiply
    51,900.22x = 77,879.92 × 20,312.84
  4. Step 4: Simplify right side
    51,900.22x = 1,581,962,354.17
  5. Step 5: Solve for x
    x = 1,581,962,354.17/51,900.22
  6. Step 6: Final answer
    x = 30,480.84

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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.