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Finding the Fourth Proportional to 81,793.06, 112,865.80 and 45,488.63

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Solution

The fourth proportional to 81,793.06, 112,865.80 and 45,488.63 is: 62,769.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,793.06 : 112,865.80 = 45,488.63 : x
  2. Step 2: Convert to fraction form
    81,793.06/112,865.80 = 45,488.63/x
  3. Step 3: Cross multiply
    81,793.06x = 112,865.80 × 45,488.63
  4. Step 4: Simplify right side
    81,793.06x = 5,134,110,615.85
  5. Step 5: Solve for x
    x = 5,134,110,615.85/81,793.06
  6. Step 6: Final answer
    x = 62,769.51

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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.