Home / 80,436.73-120,675.59-56,790.34

Finding the Fourth Proportional to 80,436.73, 120,675.59 and 56,790.34

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Solution

The fourth proportional to 80,436.73, 120,675.59 and 56,790.34 is: 85,199.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,436.73 : 120,675.59 = 56,790.34 : x
  2. Step 2: Convert to fraction form
    80,436.73/120,675.59 = 56,790.34/x
  3. Step 3: Cross multiply
    80,436.73x = 120,675.59 × 56,790.34
  4. Step 4: Simplify right side
    80,436.73x = 6,853,207,785.80
  5. Step 5: Solve for x
    x = 6,853,207,785.80/80,436.73
  6. Step 6: Final answer
    x = 85,199.98

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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.