Home / 45,138.29-67,716.55-31,105.04

Finding the Fourth Proportional to 45,138.29, 67,716.55 and 31,105.04

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Solution

The fourth proportional to 45,138.29, 67,716.55 and 31,105.04 is: 46,663.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,138.29 : 67,716.55 = 31,105.04 : x
  2. Step 2: Convert to fraction form
    45,138.29/67,716.55 = 31,105.04/x
  3. Step 3: Cross multiply
    45,138.29x = 67,716.55 × 31,105.04
  4. Step 4: Simplify right side
    45,138.29x = 2,106,325,996.41
  5. Step 5: Solve for x
    x = 2,106,325,996.41/45,138.29
  6. Step 6: Final answer
    x = 46,663.84

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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.