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Finding the Fourth Proportional to 80,582.57, 120,832.08 and 42,652.40

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Solution

The fourth proportional to 80,582.57, 120,832.08 and 42,652.40 is: 63,956.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,582.57 : 120,832.08 = 42,652.40 : x
  2. Step 2: Convert to fraction form
    80,582.57/120,832.08 = 42,652.40/x
  3. Step 3: Cross multiply
    80,582.57x = 120,832.08 × 42,652.40
  4. Step 4: Simplify right side
    80,582.57x = 5,153,778,208.99
  5. Step 5: Solve for x
    x = 5,153,778,208.99/80,582.57
  6. Step 6: Final answer
    x = 63,956.49

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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.