Home / 45,768.40-68,695.80-28,272.40

Finding the Fourth Proportional to 45,768.40, 68,695.80 and 28,272.40

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Solution

The fourth proportional to 45,768.40, 68,695.80 and 28,272.40 is: 42,435.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,768.40 : 68,695.80 = 28,272.40 : x
  2. Step 2: Convert to fraction form
    45,768.40/68,695.80 = 28,272.40/x
  3. Step 3: Cross multiply
    45,768.40x = 68,695.80 × 28,272.40
  4. Step 4: Simplify right side
    45,768.40x = 1,942,195,135.92
  5. Step 5: Solve for x
    x = 1,942,195,135.92/45,768.40
  6. Step 6: Final answer
    x = 42,435.29

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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.