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Finding the Fourth Proportional to 40,405.54, 60,541.46 and 20,656.92

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Solution

The fourth proportional to 40,405.54, 60,541.46 and 20,656.92 is: 30,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,405.54 : 60,541.46 = 20,656.92 : x
  2. Step 2: Convert to fraction form
    40,405.54/60,541.46 = 20,656.92/x
  3. Step 3: Cross multiply
    40,405.54x = 60,541.46 × 20,656.92
  4. Step 4: Simplify right side
    40,405.54x = 1,250,600,095.90
  5. Step 5: Solve for x
    x = 1,250,600,095.90/40,405.54
  6. Step 6: Final answer
    x = 30,951.20

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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.