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Finding the Fourth Proportional to 40,436.70, 60,667.20 and 28,772.70

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Solution

The fourth proportional to 40,436.70, 60,667.20 and 28,772.70 is: 43,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,436.70 : 60,667.20 = 28,772.70 : x
  2. Step 2: Convert to fraction form
    40,436.70/60,667.20 = 28,772.70/x
  3. Step 3: Cross multiply
    40,436.70x = 60,667.20 × 28,772.70
  4. Step 4: Simplify right side
    40,436.70x = 1,745,559,145.44
  5. Step 5: Solve for x
    x = 1,745,559,145.44/40,436.70
  6. Step 6: Final answer
    x = 43,167.70

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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.