Home / 80,879.40-121,319.10-52,885.80

Finding the Fourth Proportional to 80,879.40, 121,319.10 and 52,885.80

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Solution

The fourth proportional to 80,879.40, 121,319.10 and 52,885.80 is: 79,328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,879.40 : 121,319.10 = 52,885.80 : x
  2. Step 2: Convert to fraction form
    80,879.40/121,319.10 = 52,885.80/x
  3. Step 3: Cross multiply
    80,879.40x = 121,319.10 × 52,885.80
  4. Step 4: Simplify right side
    80,879.40x = 6,416,057,658.78
  5. Step 5: Solve for x
    x = 6,416,057,658.78/80,879.40
  6. Step 6: Final answer
    x = 79,328.70

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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.