Home / 45,135.54-67,711.77-20,176.58

Finding the Fourth Proportional to 45,135.54, 67,711.77 and 20,176.58

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Solution

The fourth proportional to 45,135.54, 67,711.77 and 20,176.58 is: 30,268.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,135.54 : 67,711.77 = 20,176.58 : x
  2. Step 2: Convert to fraction form
    45,135.54/67,711.77 = 20,176.58/x
  3. Step 3: Cross multiply
    45,135.54x = 67,711.77 × 20,176.58
  4. Step 4: Simplify right side
    45,135.54x = 1,366,191,605.79
  5. Step 5: Solve for x
    x = 1,366,191,605.79/45,135.54
  6. Step 6: Final answer
    x = 30,268.64

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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.