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Finding the Fourth Proportional to 80,398.98, 120,513.39 and 27,040.16

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Solution

The fourth proportional to 80,398.98, 120,513.39 and 27,040.16 is: 40,531.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,398.98 : 120,513.39 = 27,040.16 : x
  2. Step 2: Convert to fraction form
    80,398.98/120,513.39 = 27,040.16/x
  3. Step 3: Cross multiply
    80,398.98x = 120,513.39 × 27,040.16
  4. Step 4: Simplify right side
    80,398.98x = 3,258,701,547.63
  5. Step 5: Solve for x
    x = 3,258,701,547.63/80,398.98
  6. Step 6: Final answer
    x = 40,531.63

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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.