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Finding the Fourth Proportional to 80,731.68, 111,425.13 and 53,459.68

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Solution

The fourth proportional to 80,731.68, 111,425.13 and 53,459.68 is: 73,784.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,731.68 : 111,425.13 = 53,459.68 : x
  2. Step 2: Convert to fraction form
    80,731.68/111,425.13 = 53,459.68/x
  3. Step 3: Cross multiply
    80,731.68x = 111,425.13 × 53,459.68
  4. Step 4: Simplify right side
    80,731.68x = 5,956,751,793.76
  5. Step 5: Solve for x
    x = 5,956,751,793.76/80,731.68
  6. Step 6: Final answer
    x = 73,784.56

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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.