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Finding the Fourth Proportional to 80,618.62, 120,929.15 and 30,701.48

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Solution

The fourth proportional to 80,618.62, 120,929.15 and 30,701.48 is: 46,052.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,618.62 : 120,929.15 = 30,701.48 : x
  2. Step 2: Convert to fraction form
    80,618.62/120,929.15 = 30,701.48/x
  3. Step 3: Cross multiply
    80,618.62x = 120,929.15 × 30,701.48
  4. Step 4: Simplify right side
    80,618.62x = 3,712,703,880.14
  5. Step 5: Solve for x
    x = 3,712,703,880.14/80,618.62
  6. Step 6: Final answer
    x = 46,052.68

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1.5x scale

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.