Home / 79,436.91-119,155.31-20,272.60

Finding the Fourth Proportional to 79,436.91, 119,155.31 and 20,272.60

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Solution

The fourth proportional to 79,436.91, 119,155.31 and 20,272.60 is: 30,408.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,436.91 : 119,155.31 = 20,272.60 : x
  2. Step 2: Convert to fraction form
    79,436.91/119,155.31 = 20,272.60/x
  3. Step 3: Cross multiply
    79,436.91x = 119,155.31 × 20,272.60
  4. Step 4: Simplify right side
    79,436.91x = 2,415,587,937.51
  5. Step 5: Solve for x
    x = 2,415,587,937.51/79,436.91
  6. Step 6: Final answer
    x = 30,408.89

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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.