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Finding the Fourth Proportional to 75,339.45, 112,950.86 and 43,700.85

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Solution

The fourth proportional to 75,339.45, 112,950.86 and 43,700.85 is: 65,517.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,339.45 : 112,950.86 = 43,700.85 : x
  2. Step 2: Convert to fraction form
    75,339.45/112,950.86 = 43,700.85/x
  3. Step 3: Cross multiply
    75,339.45x = 112,950.86 × 43,700.85
  4. Step 4: Simplify right side
    75,339.45x = 4,936,048,371.73
  5. Step 5: Solve for x
    x = 4,936,048,371.73/75,339.45
  6. Step 6: Final answer
    x = 65,517.45

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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.