Home / 45,712.40-68,568.60-28,125.20

Finding the Fourth Proportional to 45,712.40, 68,568.60 and 28,125.20

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Solution

The fourth proportional to 45,712.40, 68,568.60 and 28,125.20 is: 42,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,712.40 : 68,568.60 = 28,125.20 : x
  2. Step 2: Convert to fraction form
    45,712.40/68,568.60 = 28,125.20/x
  3. Step 3: Cross multiply
    45,712.40x = 68,568.60 × 28,125.20
  4. Step 4: Simplify right side
    45,712.40x = 1,928,505,588.72
  5. Step 5: Solve for x
    x = 1,928,505,588.72/45,712.40
  6. Step 6: Final answer
    x = 42,187.80

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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.