Home / 45,133.12-67,715.88-20,171.08

Finding the Fourth Proportional to 45,133.12, 67,715.88 and 20,171.08

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Solution

The fourth proportional to 45,133.12, 67,715.88 and 20,171.08 is: 30,263.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,133.12 : 67,715.88 = 20,171.08 : x
  2. Step 2: Convert to fraction form
    45,133.12/67,715.88 = 20,171.08/x
  3. Step 3: Cross multiply
    45,133.12x = 67,715.88 × 20,171.08
  4. Step 4: Simplify right side
    45,133.12x = 1,365,902,432.75
  5. Step 5: Solve for x
    x = 1,365,902,432.75/45,133.12
  6. Step 6: Final answer
    x = 30,263.86

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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.