Home / 80,958.12-121,491.09-28,367.52

Finding the Fourth Proportional to 80,958.12, 121,491.09 and 28,367.52

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Solution

The fourth proportional to 80,958.12, 121,491.09 and 28,367.52 is: 42,570.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,958.12 : 121,491.09 = 28,367.52 : x
  2. Step 2: Convert to fraction form
    80,958.12/121,491.09 = 28,367.52/x
  3. Step 3: Cross multiply
    80,958.12x = 121,491.09 × 28,367.52
  4. Step 4: Simplify right side
    80,958.12x = 3,446,400,925.40
  5. Step 5: Solve for x
    x = 3,446,400,925.40/80,958.12
  6. Step 6: Final answer
    x = 42,570.17

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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.