Home / 75,345.12-113,042.34-30,992.76

Finding the Fourth Proportional to 75,345.12, 113,042.34 and 30,992.76

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Solution

The fourth proportional to 75,345.12, 113,042.34 and 30,992.76 is: 46,499.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,345.12 : 113,042.34 = 30,992.76 : x
  2. Step 2: Convert to fraction form
    75,345.12/113,042.34 = 30,992.76/x
  3. Step 3: Cross multiply
    75,345.12x = 113,042.34 × 30,992.76
  4. Step 4: Simplify right side
    75,345.12x = 3,503,494,113.46
  5. Step 5: Solve for x
    x = 3,503,494,113.46/75,345.12
  6. Step 6: Final answer
    x = 46,499.28

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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.