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Finding the Fourth Proportional to 62,429.80, 93,644.70 and 20,876.80

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Solution

The fourth proportional to 62,429.80, 93,644.70 and 20,876.80 is: 31,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,429.80 : 93,644.70 = 20,876.80 : x
  2. Step 2: Convert to fraction form
    62,429.80/93,644.70 = 20,876.80/x
  3. Step 3: Cross multiply
    62,429.80x = 93,644.70 × 20,876.80
  4. Step 4: Simplify right side
    62,429.80x = 1,955,001,672.96
  5. Step 5: Solve for x
    x = 1,955,001,672.96/62,429.80
  6. Step 6: Final answer
    x = 31,315.20

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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.