Home / 51,815.83-77,723.68-20,672.95

Finding the Fourth Proportional to 51,815.83, 77,723.68 and 20,672.95

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Solution

The fourth proportional to 51,815.83, 77,723.68 and 20,672.95 is: 31,009.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,815.83 : 77,723.68 = 20,672.95 : x
  2. Step 2: Convert to fraction form
    51,815.83/77,723.68 = 20,672.95/x
  3. Step 3: Cross multiply
    51,815.83x = 77,723.68 × 20,672.95
  4. Step 4: Simplify right side
    51,815.83x = 1,606,777,698.77
  5. Step 5: Solve for x
    x = 1,606,777,698.77/51,815.83
  6. Step 6: Final answer
    x = 31,009.40

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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.