Home / 51,899.22-77,878.42-20,311.84

Finding the Fourth Proportional to 51,899.22, 77,878.42 and 20,311.84

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Solution

The fourth proportional to 51,899.22, 77,878.42 and 20,311.84 is: 30,479.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,899.22 : 77,878.42 = 20,311.84 : x
  2. Step 2: Convert to fraction form
    51,899.22/77,878.42 = 20,311.84/x
  3. Step 3: Cross multiply
    51,899.22x = 77,878.42 × 20,311.84
  4. Step 4: Simplify right side
    51,899.22x = 1,581,854,006.49
  5. Step 5: Solve for x
    x = 1,581,854,006.49/51,899.22
  6. Step 6: Final answer
    x = 30,479.34

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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.