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Finding the Fourth Proportional to 81,793.62, 112,805.22 and 56,340.59

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Solution

The fourth proportional to 81,793.62, 112,805.22 and 56,340.59 is: 77,701.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,793.62 : 112,805.22 = 56,340.59 : x
  2. Step 2: Convert to fraction form
    81,793.62/112,805.22 = 56,340.59/x
  3. Step 3: Cross multiply
    81,793.62x = 112,805.22 × 56,340.59
  4. Step 4: Simplify right side
    81,793.62x = 6,355,512,085.85
  5. Step 5: Solve for x
    x = 6,355,512,085.85/81,793.62
  6. Step 6: Final answer
    x = 77,701.81

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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.