Home / 80,510.20-120,765.26-30,590.28

Finding the Fourth Proportional to 80,510.20, 120,765.26 and 30,590.28

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Solution

The fourth proportional to 80,510.20, 120,765.26 and 30,590.28 is: 45,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,510.20 : 120,765.26 = 30,590.28 : x
  2. Step 2: Convert to fraction form
    80,510.20/120,765.26 = 30,590.28/x
  3. Step 3: Cross multiply
    80,510.20x = 120,765.26 × 30,590.28
  4. Step 4: Simplify right side
    80,510.20x = 3,694,243,117.67
  5. Step 5: Solve for x
    x = 3,694,243,117.67/80,510.20
  6. Step 6: Final answer
    x = 45,885.40

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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.