Home / 80,902.32-121,408.15-28,312.26

Finding the Fourth Proportional to 80,902.32, 121,408.15 and 28,312.26

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Solution

The fourth proportional to 80,902.32, 121,408.15 and 28,312.26 is: 42,487.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,902.32 : 121,408.15 = 28,312.26 : x
  2. Step 2: Convert to fraction form
    80,902.32/121,408.15 = 28,312.26/x
  3. Step 3: Cross multiply
    80,902.32x = 121,408.15 × 28,312.26
  4. Step 4: Simplify right side
    80,902.32x = 3,437,339,108.92
  5. Step 5: Solve for x
    x = 3,437,339,108.92/80,902.32
  6. Step 6: Final answer
    x = 42,487.52

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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.