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Finding the Fourth Proportional to 40,512.80, 60,769.20 and 15,888.80

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Solution

The fourth proportional to 40,512.80, 60,769.20 and 15,888.80 is: 23,833.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,512.80 : 60,769.20 = 15,888.80 : x
  2. Step 2: Convert to fraction form
    40,512.80/60,769.20 = 15,888.80/x
  3. Step 3: Cross multiply
    40,512.80x = 60,769.20 × 15,888.80
  4. Step 4: Simplify right side
    40,512.80x = 965,549,664.96
  5. Step 5: Solve for x
    x = 965,549,664.96/40,512.80
  6. Step 6: Final answer
    x = 23,833.20

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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.