Home / 80,242.67-120,364.61-21,078.24

Finding the Fourth Proportional to 80,242.67, 120,364.61 and 21,078.24

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Solution

The fourth proportional to 80,242.67, 120,364.61 and 21,078.24 is: 31,617.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,242.67 : 120,364.61 = 21,078.24 : x
  2. Step 2: Convert to fraction form
    80,242.67/120,364.61 = 21,078.24/x
  3. Step 3: Cross multiply
    80,242.67x = 120,364.61 × 21,078.24
  4. Step 4: Simplify right side
    80,242.67x = 2,537,074,031.70
  5. Step 5: Solve for x
    x = 2,537,074,031.70/80,242.67
  6. Step 6: Final answer
    x = 31,617.52

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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.