Home / 77,984.21-117,028.20-42,454.49

Finding the Fourth Proportional to 77,984.21, 117,028.20 and 42,454.49

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Solution

The fourth proportional to 77,984.21, 117,028.20 and 42,454.49 is: 63,709.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,984.21 : 117,028.20 = 42,454.49 : x
  2. Step 2: Convert to fraction form
    77,984.21/117,028.20 = 42,454.49/x
  3. Step 3: Cross multiply
    77,984.21x = 117,028.20 × 42,454.49
  4. Step 4: Simplify right side
    77,984.21x = 4,968,372,546.62
  5. Step 5: Solve for x
    x = 4,968,372,546.62/77,984.21
  6. Step 6: Final answer
    x = 63,709.98

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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.