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Finding the Fourth Proportional to 79,808.13, 119,712.20 and 27,218.07

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Solution

The fourth proportional to 79,808.13, 119,712.20 and 27,218.07 is: 40,827.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,808.13 : 119,712.20 = 27,218.07 : x
  2. Step 2: Convert to fraction form
    79,808.13/119,712.20 = 27,218.07/x
  3. Step 3: Cross multiply
    79,808.13x = 119,712.20 × 27,218.07
  4. Step 4: Simplify right side
    79,808.13x = 3,258,334,903.36
  5. Step 5: Solve for x
    x = 3,258,334,903.36/79,808.13
  6. Step 6: Final answer
    x = 40,827.11

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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.