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Finding the Fourth Proportional to 84,588.60, 126,700.24 and 79,620

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Solution

The fourth proportional to 84,588.60, 126,700.24 and 79,620 is: 119,258.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,588.60 : 126,700.24 = 79,620 : x
  2. Step 2: Convert to fraction form
    84,588.60/126,700.24 = 79,620/x
  3. Step 3: Cross multiply
    84,588.60x = 126,700.24 × 79,620
  4. Step 4: Simplify right side
    84,588.60x = 10,087,873,108.80
  5. Step 5: Solve for x
    x = 10,087,873,108.80/84,588.60
  6. Step 6: Final answer
    x = 119,258.07

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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.