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Finding the Fourth Proportional to 80,649.95, 120,950.32 and 21,477.95

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Solution

The fourth proportional to 80,649.95, 120,950.32 and 21,477.95 is: 32,210.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,649.95 : 120,950.32 = 21,477.95 : x
  2. Step 2: Convert to fraction form
    80,649.95/120,950.32 = 21,477.95/x
  3. Step 3: Cross multiply
    80,649.95x = 120,950.32 × 21,477.95
  4. Step 4: Simplify right side
    80,649.95x = 2,597,764,925.44
  5. Step 5: Solve for x
    x = 2,597,764,925.44/80,649.95
  6. Step 6: Final answer
    x = 32,210.37

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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.