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Finding the Fourth Proportional to 79,445.58, 119,169.45 and 20,281.74

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Solution

The fourth proportional to 79,445.58, 119,169.45 and 20,281.74 is: 30,422.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,445.58 : 119,169.45 = 20,281.74 : x
  2. Step 2: Convert to fraction form
    79,445.58/119,169.45 = 20,281.74/x
  3. Step 3: Cross multiply
    79,445.58x = 119,169.45 × 20,281.74
  4. Step 4: Simplify right side
    79,445.58x = 2,416,963,800.84
  5. Step 5: Solve for x
    x = 2,416,963,800.84/79,445.58
  6. Step 6: Final answer
    x = 30,422.89

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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.