Home / 80,284.23-120,420.27-30,359.88

Finding the Fourth Proportional to 80,284.23, 120,420.27 and 30,359.88

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Solution

The fourth proportional to 80,284.23, 120,420.27 and 30,359.88 is: 45,537.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,284.23 : 120,420.27 = 30,359.88 : x
  2. Step 2: Convert to fraction form
    80,284.23/120,420.27 = 30,359.88/x
  3. Step 3: Cross multiply
    80,284.23x = 120,420.27 × 30,359.88
  4. Step 4: Simplify right side
    80,284.23x = 3,655,944,946.77
  5. Step 5: Solve for x
    x = 3,655,944,946.77/80,284.23
  6. Step 6: Final answer
    x = 45,537.52

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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.