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Finding the Fourth Proportional to 49,769.60, 74,654.40 and 43,354.40

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Solution

The fourth proportional to 49,769.60, 74,654.40 and 43,354.40 is: 65,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,769.60 : 74,654.40 = 43,354.40 : x
  2. Step 2: Convert to fraction form
    49,769.60/74,654.40 = 43,354.40/x
  3. Step 3: Cross multiply
    49,769.60x = 74,654.40 × 43,354.40
  4. Step 4: Simplify right side
    49,769.60x = 3,236,596,719.36
  5. Step 5: Solve for x
    x = 3,236,596,719.36/49,769.60
  6. Step 6: Final answer
    x = 65,031.60

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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.