Home / 80,539.78-120,793.20-30,602.38

Finding the Fourth Proportional to 80,539.78, 120,793.20 and 30,602.38

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Solution

The fourth proportional to 80,539.78, 120,793.20 and 30,602.38 is: 45,897.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,539.78 : 120,793.20 = 30,602.38 : x
  2. Step 2: Convert to fraction form
    80,539.78/120,793.20 = 30,602.38/x
  3. Step 3: Cross multiply
    80,539.78x = 120,793.20 × 30,602.38
  4. Step 4: Simplify right side
    80,539.78x = 3,696,559,407.82
  5. Step 5: Solve for x
    x = 3,696,559,407.82/80,539.78
  6. Step 6: Final answer
    x = 45,897.31

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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.