Home / 75,981.07-113,962.96-20,572.75

Finding the Fourth Proportional to 75,981.07, 113,962.96 and 20,572.75

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Solution

The fourth proportional to 75,981.07, 113,962.96 and 20,572.75 is: 30,856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,981.07 : 113,962.96 = 20,572.75 : x
  2. Step 2: Convert to fraction form
    75,981.07/113,962.96 = 20,572.75/x
  3. Step 3: Cross multiply
    75,981.07x = 113,962.96 × 20,572.75
  4. Step 4: Simplify right side
    75,981.07x = 2,344,531,485.34
  5. Step 5: Solve for x
    x = 2,344,531,485.34/75,981.07
  6. Step 6: Final answer
    x = 30,856.78

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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.