Home / 80,564.58-120,815.82-30,618.36

Finding the Fourth Proportional to 80,564.58, 120,815.82 and 30,618.36

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Solution

The fourth proportional to 80,564.58, 120,815.82 and 30,618.36 is: 45,915.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,564.58 : 120,815.82 = 30,618.36 : x
  2. Step 2: Convert to fraction form
    80,564.58/120,815.82 = 30,618.36/x
  3. Step 3: Cross multiply
    80,564.58x = 120,815.82 × 30,618.36
  4. Step 4: Simplify right side
    80,564.58x = 3,699,182,270.46
  5. Step 5: Solve for x
    x = 3,699,182,270.46/80,564.58
  6. Step 6: Final answer
    x = 45,915.74

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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.