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Finding the Fourth Proportional to 79,866.40, 119,799.60 and 20,701.60

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Solution

The fourth proportional to 79,866.40, 119,799.60 and 20,701.60 is: 31,052.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,866.40 : 119,799.60 = 20,701.60 : x
  2. Step 2: Convert to fraction form
    79,866.40/119,799.60 = 20,701.60/x
  3. Step 3: Cross multiply
    79,866.40x = 119,799.60 × 20,701.60
  4. Step 4: Simplify right side
    79,866.40x = 2,480,043,399.36
  5. Step 5: Solve for x
    x = 2,480,043,399.36/79,866.40
  6. Step 6: Final answer
    x = 31,052.40

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Similar ratio
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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.