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Finding the Fourth Proportional to 79,484.64, 119,226.72 and 20,320.32

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Solution

The fourth proportional to 79,484.64, 119,226.72 and 20,320.32 is: 30,480.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,484.64 : 119,226.72 = 20,320.32 : x
  2. Step 2: Convert to fraction form
    79,484.64/119,226.72 = 20,320.32/x
  3. Step 3: Cross multiply
    79,484.64x = 119,226.72 × 20,320.32
  4. Step 4: Simplify right side
    79,484.64x = 2,422,725,102.95
  5. Step 5: Solve for x
    x = 2,422,725,102.95/79,484.64
  6. Step 6: Final answer
    x = 30,480.42

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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.