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Finding the Fourth Proportional to 80,659.40, 113,039.80 and 80,659.40

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Solution

The fourth proportional to 80,659.40, 113,039.80 and 80,659.40 is: 113,039.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,659.40 : 113,039.80 = 80,659.40 : x
  2. Step 2: Convert to fraction form
    80,659.40/113,039.80 = 80,659.40/x
  3. Step 3: Cross multiply
    80,659.40x = 113,039.80 × 80,659.40
  4. Step 4: Simplify right side
    80,659.40x = 9,117,722,444.12
  5. Step 5: Solve for x
    x = 9,117,722,444.12/80,659.40
  6. Step 6: Final answer
    x = 113,039.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.