Home / 48,078.12-72,113.94-20,376.12

Finding the Fourth Proportional to 48,078.12, 72,113.94 and 20,376.12

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Solution

The fourth proportional to 48,078.12, 72,113.94 and 20,376.12 is: 30,562.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,078.12 : 72,113.94 = 20,376.12 : x
  2. Step 2: Convert to fraction form
    48,078.12/72,113.94 = 20,376.12/x
  3. Step 3: Cross multiply
    48,078.12x = 72,113.94 × 20,376.12
  4. Step 4: Simplify right side
    48,078.12x = 1,469,402,295.11
  5. Step 5: Solve for x
    x = 1,469,402,295.11/48,078.12
  6. Step 6: Final answer
    x = 30,562.81

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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.