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Finding the Fourth Proportional to 40,432.80, 60,627.60 and 14,138.40

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Solution

The fourth proportional to 40,432.80, 60,627.60 and 14,138.40 is: 21,200.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,432.80 : 60,627.60 = 14,138.40 : x
  2. Step 2: Convert to fraction form
    40,432.80/60,627.60 = 14,138.40/x
  3. Step 3: Cross multiply
    40,432.80x = 60,627.60 × 14,138.40
  4. Step 4: Simplify right side
    40,432.80x = 857,177,259.84
  5. Step 5: Solve for x
    x = 857,177,259.84/40,432.80
  6. Step 6: Final answer
    x = 21,200.05

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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.