Home / 80,534.42-120,259.26-65,772.62

Finding the Fourth Proportional to 80,534.42, 120,259.26 and 65,772.62

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Solution

The fourth proportional to 80,534.42, 120,259.26 and 65,772.62 is: 98,215.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,534.42 : 120,259.26 = 65,772.62 : x
  2. Step 2: Convert to fraction form
    80,534.42/120,259.26 = 65,772.62/x
  3. Step 3: Cross multiply
    80,534.42x = 120,259.26 × 65,772.62
  4. Step 4: Simplify right side
    80,534.42x = 7,909,766,609.46
  5. Step 5: Solve for x
    x = 7,909,766,609.46/80,534.42
  6. Step 6: Final answer
    x = 98,215.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.