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Finding the Fourth Proportional to 80,463.30, 120,774.40 and 60,403.04

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Solution

The fourth proportional to 80,463.30, 120,774.40 and 60,403.04 is: 90,664.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,463.30 : 120,774.40 = 60,403.04 : x
  2. Step 2: Convert to fraction form
    80,463.30/120,774.40 = 60,403.04/x
  3. Step 3: Cross multiply
    80,463.30x = 120,774.40 × 60,403.04
  4. Step 4: Simplify right side
    80,463.30x = 7,295,141,178.36
  5. Step 5: Solve for x
    x = 7,295,141,178.36/80,463.30
  6. Step 6: Final answer
    x = 90,664.21

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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.