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Finding the Fourth Proportional to 82,357.32, 122,476.47 and 79,732.92

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Solution

The fourth proportional to 82,357.32, 122,476.47 and 79,732.92 is: 118,573.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,357.32 : 122,476.47 = 79,732.92 : x
  2. Step 2: Convert to fraction form
    82,357.32/122,476.47 = 79,732.92/x
  3. Step 3: Cross multiply
    82,357.32x = 122,476.47 × 79,732.92
  4. Step 4: Simplify right side
    82,357.32x = 9,765,406,584.39
  5. Step 5: Solve for x
    x = 9,765,406,584.39/82,357.32
  6. Step 6: Final answer
    x = 118,573.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.