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Finding the Fourth Proportional to 49,616.80, 74,425.20 and 28,880.80

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Solution

The fourth proportional to 49,616.80, 74,425.20 and 28,880.80 is: 43,321.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,616.80 : 74,425.20 = 28,880.80 : x
  2. Step 2: Convert to fraction form
    49,616.80/74,425.20 = 28,880.80/x
  3. Step 3: Cross multiply
    49,616.80x = 74,425.20 × 28,880.80
  4. Step 4: Simplify right side
    49,616.80x = 2,149,459,316.16
  5. Step 5: Solve for x
    x = 2,149,459,316.16/49,616.80
  6. Step 6: Final answer
    x = 43,321.20

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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.