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Finding the Fourth Proportional to 74,253.70, 111,368.70 and 21,650.88

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Solution

The fourth proportional to 74,253.70, 111,368.70 and 21,650.88 is: 32,472.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,253.70 : 111,368.70 = 21,650.88 : x
  2. Step 2: Convert to fraction form
    74,253.70/111,368.70 = 21,650.88/x
  3. Step 3: Cross multiply
    74,253.70x = 111,368.70 × 21,650.88
  4. Step 4: Simplify right side
    74,253.70x = 2,411,230,359.46
  5. Step 5: Solve for x
    x = 2,411,230,359.46/74,253.70
  6. Step 6: Final answer
    x = 32,472.86

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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.