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Finding the Fourth Proportional to 51,287.04, 76,930.56 and 40,964.40

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Solution

The fourth proportional to 51,287.04, 76,930.56 and 40,964.40 is: 61,446.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,287.04 : 76,930.56 = 40,964.40 : x
  2. Step 2: Convert to fraction form
    51,287.04/76,930.56 = 40,964.40/x
  3. Step 3: Cross multiply
    51,287.04x = 76,930.56 × 40,964.40
  4. Step 4: Simplify right side
    51,287.04x = 3,151,414,232.06
  5. Step 5: Solve for x
    x = 3,151,414,232.06/51,287.04
  6. Step 6: Final answer
    x = 61,446.60

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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.