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Finding the Fourth Proportional to 82,743.60, 124,115.40 and 73,558.20

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Solution

The fourth proportional to 82,743.60, 124,115.40 and 73,558.20 is: 110,337.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,743.60 : 124,115.40 = 73,558.20 : x
  2. Step 2: Convert to fraction form
    82,743.60/124,115.40 = 73,558.20/x
  3. Step 3: Cross multiply
    82,743.60x = 124,115.40 × 73,558.20
  4. Step 4: Simplify right side
    82,743.60x = 9,129,705,416.28
  5. Step 5: Solve for x
    x = 9,129,705,416.28/82,743.60
  6. Step 6: Final answer
    x = 110,337.30

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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.