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Finding the Fourth Proportional to 80,506.80, 120,875.40 and 45,514.80

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Solution

The fourth proportional to 80,506.80, 120,875.40 and 45,514.80 is: 68,337.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,506.80 : 120,875.40 = 45,514.80 : x
  2. Step 2: Convert to fraction form
    80,506.80/120,875.40 = 45,514.80/x
  3. Step 3: Cross multiply
    80,506.80x = 120,875.40 × 45,514.80
  4. Step 4: Simplify right side
    80,506.80x = 5,501,619,655.92
  5. Step 5: Solve for x
    x = 5,501,619,655.92/80,506.80
  6. Step 6: Final answer
    x = 68,337.33

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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.