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Finding the Fourth Proportional to 83,532.70, 125,299.05 and 21,203.20

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Solution

The fourth proportional to 83,532.70, 125,299.05 and 21,203.20 is: 31,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,532.70 : 125,299.05 = 21,203.20 : x
  2. Step 2: Convert to fraction form
    83,532.70/125,299.05 = 21,203.20/x
  3. Step 3: Cross multiply
    83,532.70x = 125,299.05 × 21,203.20
  4. Step 4: Simplify right side
    83,532.70x = 2,656,740,816.96
  5. Step 5: Solve for x
    x = 2,656,740,816.96/83,532.70
  6. Step 6: Final answer
    x = 31,804.80

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1.5x scale

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.