Home / 79,442.90-119,164.21-20,278.55

Finding the Fourth Proportional to 79,442.90, 119,164.21 and 20,278.55

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Solution

The fourth proportional to 79,442.90, 119,164.21 and 20,278.55 is: 30,417.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,442.90 : 119,164.21 = 20,278.55 : x
  2. Step 2: Convert to fraction form
    79,442.90/119,164.21 = 20,278.55/x
  3. Step 3: Cross multiply
    79,442.90x = 119,164.21 × 20,278.55
  4. Step 4: Simplify right side
    79,442.90x = 2,416,477,390.70
  5. Step 5: Solve for x
    x = 2,416,477,390.70/79,442.90
  6. Step 6: Final answer
    x = 30,417.79

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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.