Home / 45,144.76-67,725-18,867.94

Finding the Fourth Proportional to 45,144.76, 67,725 and 18,867.94

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Solution

The fourth proportional to 45,144.76, 67,725 and 18,867.94 is: 28,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,144.76 : 67,725 = 18,867.94 : x
  2. Step 2: Convert to fraction form
    45,144.76/67,725 = 18,867.94/x
  3. Step 3: Cross multiply
    45,144.76x = 67,725 × 18,867.94
  4. Step 4: Simplify right side
    45,144.76x = 1,277,831,236.50
  5. Step 5: Solve for x
    x = 1,277,831,236.50/45,144.76
  6. Step 6: Final answer
    x = 28,305.20

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1.5x scale

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.