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Finding the Fourth Proportional to 83,405.60, 125,124.60 and 36,020.60

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Solution

The fourth proportional to 83,405.60, 125,124.60 and 36,020.60 is: 54,037.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,405.60 : 125,124.60 = 36,020.60 : x
  2. Step 2: Convert to fraction form
    83,405.60/125,124.60 = 36,020.60/x
  3. Step 3: Cross multiply
    83,405.60x = 125,124.60 × 36,020.60
  4. Step 4: Simplify right side
    83,405.60x = 4,507,063,166.76
  5. Step 5: Solve for x
    x = 4,507,063,166.76/83,405.60
  6. Step 6: Final answer
    x = 54,037.90

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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.