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Finding the Fourth Proportional to 99,791.76, 137,709.20 and 59,484.75

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Solution

The fourth proportional to 99,791.76, 137,709.20 and 59,484.75 is: 82,086.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,791.76 : 137,709.20 = 59,484.75 : x
  2. Step 2: Convert to fraction form
    99,791.76/137,709.20 = 59,484.75/x
  3. Step 3: Cross multiply
    99,791.76x = 137,709.20 × 59,484.75
  4. Step 4: Simplify right side
    99,791.76x = 8,191,597,334.70
  5. Step 5: Solve for x
    x = 8,191,597,334.70/99,791.76
  6. Step 6: Final answer
    x = 82,086.91

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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.