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Finding the Fourth Proportional to 80,657.98, 120,750.39 and 56,558.73

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Solution

The fourth proportional to 80,657.98, 120,750.39 and 56,558.73 is: 84,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,657.98 : 120,750.39 = 56,558.73 : x
  2. Step 2: Convert to fraction form
    80,657.98/120,750.39 = 56,558.73/x
  3. Step 3: Cross multiply
    80,657.98x = 120,750.39 × 56,558.73
  4. Step 4: Simplify right side
    80,657.98x = 6,829,488,705.40
  5. Step 5: Solve for x
    x = 6,829,488,705.40/80,657.98
  6. Step 6: Final answer
    x = 84,672.20

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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.