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Finding the Fourth Proportional to 40,730.80, 61,096.20 and 28,046.20

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Solution

The fourth proportional to 40,730.80, 61,096.20 and 28,046.20 is: 42,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,730.80 : 61,096.20 = 28,046.20 : x
  2. Step 2: Convert to fraction form
    40,730.80/61,096.20 = 28,046.20/x
  3. Step 3: Cross multiply
    40,730.80x = 61,096.20 × 28,046.20
  4. Step 4: Simplify right side
    40,730.80x = 1,713,516,244.44
  5. Step 5: Solve for x
    x = 1,713,516,244.44/40,730.80
  6. Step 6: Final answer
    x = 42,069.30

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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.