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Finding the Fourth Proportional to 82,806.40, 124,209.60 and 43,375.60

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Solution

The fourth proportional to 82,806.40, 124,209.60 and 43,375.60 is: 65,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,806.40 : 124,209.60 = 43,375.60 : x
  2. Step 2: Convert to fraction form
    82,806.40/124,209.60 = 43,375.60/x
  3. Step 3: Cross multiply
    82,806.40x = 124,209.60 × 43,375.60
  4. Step 4: Simplify right side
    82,806.40x = 5,387,665,925.76
  5. Step 5: Solve for x
    x = 5,387,665,925.76/82,806.40
  6. Step 6: Final answer
    x = 65,063.40

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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.