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Finding the Fourth Proportional to 40,405.48, 60,496.44 and 20,641.48

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Solution

The fourth proportional to 40,405.48, 60,496.44 and 20,641.48 is: 30,905.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,405.48 : 60,496.44 = 20,641.48 : x
  2. Step 2: Convert to fraction form
    40,405.48/60,496.44 = 20,641.48/x
  3. Step 3: Cross multiply
    40,405.48x = 60,496.44 × 20,641.48
  4. Step 4: Simplify right side
    40,405.48x = 1,248,736,056.33
  5. Step 5: Solve for x
    x = 1,248,736,056.33/40,405.48
  6. Step 6: Final answer
    x = 30,905.12

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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.