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Finding the Fourth Proportional to 83,369.80, 115,067.34 and 56,520.94

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Solution

The fourth proportional to 83,369.80, 115,067.34 and 56,520.94 is: 78,010.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,369.80 : 115,067.34 = 56,520.94 : x
  2. Step 2: Convert to fraction form
    83,369.80/115,067.34 = 56,520.94/x
  3. Step 3: Cross multiply
    83,369.80x = 115,067.34 × 56,520.94
  4. Step 4: Simplify right side
    83,369.80x = 6,503,714,220.10
  5. Step 5: Solve for x
    x = 6,503,714,220.10/83,369.80
  6. Step 6: Final answer
    x = 78,010.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.