Home / 80,777.55-121,167.94-21,613.12

Finding the Fourth Proportional to 80,777.55, 121,167.94 and 21,613.12

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Solution

The fourth proportional to 80,777.55, 121,167.94 and 21,613.12 is: 32,420.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,777.55 : 121,167.94 = 21,613.12 : x
  2. Step 2: Convert to fraction form
    80,777.55/121,167.94 = 21,613.12/x
  3. Step 3: Cross multiply
    80,777.55x = 121,167.94 × 21,613.12
  4. Step 4: Simplify right side
    80,777.55x = 2,618,817,173.34
  5. Step 5: Solve for x
    x = 2,618,817,173.34/80,777.55
  6. Step 6: Final answer
    x = 32,420.11

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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.