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Finding the Fourth Proportional to 80,297.92, 120,411.96 and 42,849.70

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Solution

The fourth proportional to 80,297.92, 120,411.96 and 42,849.70 is: 64,255.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,297.92 : 120,411.96 = 42,849.70 : x
  2. Step 2: Convert to fraction form
    80,297.92/120,411.96 = 42,849.70/x
  3. Step 3: Cross multiply
    80,297.92x = 120,411.96 × 42,849.70
  4. Step 4: Simplify right side
    80,297.92x = 5,159,616,362.41
  5. Step 5: Solve for x
    x = 5,159,616,362.41/80,297.92
  6. Step 6: Final answer
    x = 64,255.92

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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.