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Finding the Fourth Proportional to 79,860.57, 119,764.92 and 26,538.21

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Solution

The fourth proportional to 79,860.57, 119,764.92 and 26,538.21 is: 39,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,860.57 : 119,764.92 = 26,538.21 : x
  2. Step 2: Convert to fraction form
    79,860.57/119,764.92 = 26,538.21/x
  3. Step 3: Cross multiply
    79,860.57x = 119,764.92 × 26,538.21
  4. Step 4: Simplify right side
    79,860.57x = 3,178,346,597.59
  5. Step 5: Solve for x
    x = 3,178,346,597.59/79,860.57
  6. Step 6: Final answer
    x = 39,798.70

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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.