Home / 80,779.55-121,170.94-21,615.12

Finding the Fourth Proportional to 80,779.55, 121,170.94 and 21,615.12

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Solution

The fourth proportional to 80,779.55, 121,170.94 and 21,615.12 is: 32,423.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,779.55 : 121,170.94 = 21,615.12 : x
  2. Step 2: Convert to fraction form
    80,779.55/121,170.94 = 21,615.12/x
  3. Step 3: Cross multiply
    80,779.55x = 121,170.94 × 21,615.12
  4. Step 4: Simplify right side
    80,779.55x = 2,619,124,408.61
  5. Step 5: Solve for x
    x = 2,619,124,408.61/80,779.55
  6. Step 6: Final answer
    x = 32,423.11

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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.