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Finding the Fourth Proportional to 80,455.80, 120,683.70 and 36,035.40

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Solution

The fourth proportional to 80,455.80, 120,683.70 and 36,035.40 is: 54,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,455.80 : 120,683.70 = 36,035.40 : x
  2. Step 2: Convert to fraction form
    80,455.80/120,683.70 = 36,035.40/x
  3. Step 3: Cross multiply
    80,455.80x = 120,683.70 × 36,035.40
  4. Step 4: Simplify right side
    80,455.80x = 4,348,885,402.98
  5. Step 5: Solve for x
    x = 4,348,885,402.98/80,455.80
  6. Step 6: Final answer
    x = 54,053.10

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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.