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Finding the Fourth Proportional to 80,175.86, 110,612.85 and 61,784.39

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Solution

The fourth proportional to 80,175.86, 110,612.85 and 61,784.39 is: 85,239.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,175.86 : 110,612.85 = 61,784.39 : x
  2. Step 2: Convert to fraction form
    80,175.86/110,612.85 = 61,784.39/x
  3. Step 3: Cross multiply
    80,175.86x = 110,612.85 × 61,784.39
  4. Step 4: Simplify right side
    80,175.86x = 6,834,147,463.41
  5. Step 5: Solve for x
    x = 6,834,147,463.41/80,175.86
  6. Step 6: Final answer
    x = 85,239.47

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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.