Home / 45,129.68-67,620.54-31,958.40

Finding the Fourth Proportional to 45,129.68, 67,620.54 and 31,958.40

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Solution

The fourth proportional to 45,129.68, 67,620.54 and 31,958.40 is: 47,885.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,129.68 : 67,620.54 = 31,958.40 : x
  2. Step 2: Convert to fraction form
    45,129.68/67,620.54 = 31,958.40/x
  3. Step 3: Cross multiply
    45,129.68x = 67,620.54 × 31,958.40
  4. Step 4: Simplify right side
    45,129.68x = 2,161,044,265.54
  5. Step 5: Solve for x
    x = 2,161,044,265.54/45,129.68
  6. Step 6: Final answer
    x = 47,885.21

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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.