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Finding the Fourth Proportional to 53,446, 80,178.70 and 18,377.86

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Solution

The fourth proportional to 53,446, 80,178.70 and 18,377.86 is: 27,570.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,446 : 80,178.70 = 18,377.86 : x
  2. Step 2: Convert to fraction form
    53,446/80,178.70 = 18,377.86/x
  3. Step 3: Cross multiply
    53,446x = 80,178.70 × 18,377.86
  4. Step 4: Simplify right side
    53,446x = 1,473,512,923.58
  5. Step 5: Solve for x
    x = 1,473,512,923.58/53,446
  6. Step 6: Final answer
    x = 27,570.13

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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.