Home / 80,774.48-111,474-53,899.88

Finding the Fourth Proportional to 80,774.48, 111,474 and 53,899.88

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Solution

The fourth proportional to 80,774.48, 111,474 and 53,899.88 is: 74,385.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,774.48 : 111,474 = 53,899.88 : x
  2. Step 2: Convert to fraction form
    80,774.48/111,474 = 53,899.88/x
  3. Step 3: Cross multiply
    80,774.48x = 111,474 × 53,899.88
  4. Step 4: Simplify right side
    80,774.48x = 6,008,435,223.12
  5. Step 5: Solve for x
    x = 6,008,435,223.12/80,774.48
  6. Step 6: Final answer
    x = 74,385.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.