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Finding the Fourth Proportional to 80,572.76, 120,827.64 and 30,626.36

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Solution

The fourth proportional to 80,572.76, 120,827.64 and 30,626.36 is: 45,927.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,572.76 : 120,827.64 = 30,626.36 : x
  2. Step 2: Convert to fraction form
    80,572.76/120,827.64 = 30,626.36/x
  3. Step 3: Cross multiply
    80,572.76x = 120,827.64 × 30,626.36
  4. Step 4: Simplify right side
    80,572.76x = 3,700,510,800.59
  5. Step 5: Solve for x
    x = 3,700,510,800.59/80,572.76
  6. Step 6: Final answer
    x = 45,927.57

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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.