Home / 80,879.40-121,319.10-49,732.20

Finding the Fourth Proportional to 80,879.40, 121,319.10 and 49,732.20

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Solution

The fourth proportional to 80,879.40, 121,319.10 and 49,732.20 is: 74,598.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,879.40 : 121,319.10 = 49,732.20 : x
  2. Step 2: Convert to fraction form
    80,879.40/121,319.10 = 49,732.20/x
  3. Step 3: Cross multiply
    80,879.40x = 121,319.10 × 49,732.20
  4. Step 4: Simplify right side
    80,879.40x = 6,033,465,745.02
  5. Step 5: Solve for x
    x = 6,033,465,745.02/80,879.40
  6. Step 6: Final answer
    x = 74,598.30

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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.