Home / 45,512.50-68,280.28-12,680.50

Finding the Fourth Proportional to 45,512.50, 68,280.28 and 12,680.50

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Solution

The fourth proportional to 45,512.50, 68,280.28 and 12,680.50 is: 19,023.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,512.50 : 68,280.28 = 12,680.50 : x
  2. Step 2: Convert to fraction form
    45,512.50/68,280.28 = 12,680.50/x
  3. Step 3: Cross multiply
    45,512.50x = 68,280.28 × 12,680.50
  4. Step 4: Simplify right side
    45,512.50x = 865,828,090.54
  5. Step 5: Solve for x
    x = 865,828,090.54/45,512.50
  6. Step 6: Final answer
    x = 19,023.96

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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.