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Finding the Fourth Proportional to 83,064.60, 124,596.90 and 72,696.60

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Solution

The fourth proportional to 83,064.60, 124,596.90 and 72,696.60 is: 109,044.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,064.60 : 124,596.90 = 72,696.60 : x
  2. Step 2: Convert to fraction form
    83,064.60/124,596.90 = 72,696.60/x
  3. Step 3: Cross multiply
    83,064.60x = 124,596.90 × 72,696.60
  4. Step 4: Simplify right side
    83,064.60x = 9,057,771,000.54
  5. Step 5: Solve for x
    x = 9,057,771,000.54/83,064.60
  6. Step 6: Final answer
    x = 109,044.90

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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.