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Finding the Fourth Proportional to 83,967.40, 125,732.40 and 80,030.80

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Solution

The fourth proportional to 83,967.40, 125,732.40 and 80,030.80 is: 119,837.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,967.40 : 125,732.40 = 80,030.80 : x
  2. Step 2: Convert to fraction form
    83,967.40/125,732.40 = 80,030.80/x
  3. Step 3: Cross multiply
    83,967.40x = 125,732.40 × 80,030.80
  4. Step 4: Simplify right side
    83,967.40x = 10,062,464,557.92
  5. Step 5: Solve for x
    x = 10,062,464,557.92/83,967.40
  6. Step 6: Final answer
    x = 119,837.75

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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.