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Finding the Fourth Proportional to 79,443.67, 119,165.40 and 20,279.35

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Solution

The fourth proportional to 79,443.67, 119,165.40 and 20,279.35 is: 30,419.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,443.67 : 119,165.40 = 20,279.35 : x
  2. Step 2: Convert to fraction form
    79,443.67/119,165.40 = 20,279.35/x
  3. Step 3: Cross multiply
    79,443.67x = 119,165.40 × 20,279.35
  4. Step 4: Simplify right side
    79,443.67x = 2,416,596,854.49
  5. Step 5: Solve for x
    x = 2,416,596,854.49/79,443.67
  6. Step 6: Final answer
    x = 30,419.00

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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.