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Finding the Fourth Proportional to 49,206.40, 73,809.60 and 28,405.60

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Solution

The fourth proportional to 49,206.40, 73,809.60 and 28,405.60 is: 42,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,206.40 : 73,809.60 = 28,405.60 : x
  2. Step 2: Convert to fraction form
    49,206.40/73,809.60 = 28,405.60/x
  3. Step 3: Cross multiply
    49,206.40x = 73,809.60 × 28,405.60
  4. Step 4: Simplify right side
    49,206.40x = 2,096,605,973.76
  5. Step 5: Solve for x
    x = 2,096,605,973.76/49,206.40
  6. Step 6: Final answer
    x = 42,608.40

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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.