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Finding the Fourth Proportional to 80,117.99, 110,489.66 and 68,783.86

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Solution

The fourth proportional to 80,117.99, 110,489.66 and 68,783.86 is: 94,858.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,117.99 : 110,489.66 = 68,783.86 : x
  2. Step 2: Convert to fraction form
    80,117.99/110,489.66 = 68,783.86/x
  3. Step 3: Cross multiply
    80,117.99x = 110,489.66 × 68,783.86
  4. Step 4: Simplify right side
    80,117.99x = 7,599,905,357.02
  5. Step 5: Solve for x
    x = 7,599,905,357.02/80,117.99
  6. Step 6: Final answer
    x = 94,858.91

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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.