Home / 45,097.81-67,647.17-20,139.12

Finding the Fourth Proportional to 45,097.81, 67,647.17 and 20,139.12

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Solution

The fourth proportional to 45,097.81, 67,647.17 and 20,139.12 is: 30,208.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,097.81 : 67,647.17 = 20,139.12 : x
  2. Step 2: Convert to fraction form
    45,097.81/67,647.17 = 20,139.12/x
  3. Step 3: Cross multiply
    45,097.81x = 67,647.17 × 20,139.12
  4. Step 4: Simplify right side
    45,097.81x = 1,362,354,373.59
  5. Step 5: Solve for x
    x = 1,362,354,373.59/45,097.81
  6. Step 6: Final answer
    x = 30,208.88

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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.