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Finding the Fourth Proportional to 80,995.80, 121,493.70 and 58,704.60

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Solution

The fourth proportional to 80,995.80, 121,493.70 and 58,704.60 is: 88,056.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,995.80 : 121,493.70 = 58,704.60 : x
  2. Step 2: Convert to fraction form
    80,995.80/121,493.70 = 58,704.60/x
  3. Step 3: Cross multiply
    80,995.80x = 121,493.70 × 58,704.60
  4. Step 4: Simplify right side
    80,995.80x = 7,132,239,061.02
  5. Step 5: Solve for x
    x = 7,132,239,061.02/80,995.80
  6. Step 6: Final answer
    x = 88,056.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.