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Finding the Fourth Proportional to 40,040.80, 60,190.80 and 28,434.40

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Solution

The fourth proportional to 40,040.80, 60,190.80 and 28,434.40 is: 42,743.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,040.80 : 60,190.80 = 28,434.40 : x
  2. Step 2: Convert to fraction form
    40,040.80/60,190.80 = 28,434.40/x
  3. Step 3: Cross multiply
    40,040.80x = 60,190.80 × 28,434.40
  4. Step 4: Simplify right side
    40,040.80x = 1,711,489,283.52
  5. Step 5: Solve for x
    x = 1,711,489,283.52/40,040.80
  6. Step 6: Final answer
    x = 42,743.63

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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.