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Finding the Fourth Proportional to 40,615.20, 60,865.20 and 30,002.40

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Solution

The fourth proportional to 40,615.20, 60,865.20 and 30,002.40 is: 44,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,615.20 : 60,865.20 = 30,002.40 : x
  2. Step 2: Convert to fraction form
    40,615.20/60,865.20 = 30,002.40/x
  3. Step 3: Cross multiply
    40,615.20x = 60,865.20 × 30,002.40
  4. Step 4: Simplify right side
    40,615.20x = 1,826,102,076.48
  5. Step 5: Solve for x
    x = 1,826,102,076.48/40,615.20
  6. Step 6: Final answer
    x = 44,961.05

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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.