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Finding the Fourth Proportional to 75,076.73, 112,611.84 and 30,688.73

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Solution

The fourth proportional to 75,076.73, 112,611.84 and 30,688.73 is: 46,031.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,076.73 : 112,611.84 = 30,688.73 : x
  2. Step 2: Convert to fraction form
    75,076.73/112,611.84 = 30,688.73/x
  3. Step 3: Cross multiply
    75,076.73x = 112,611.84 × 30,688.73
  4. Step 4: Simplify right side
    75,076.73x = 3,455,914,352.56
  5. Step 5: Solve for x
    x = 3,455,914,352.56/75,076.73
  6. Step 6: Final answer
    x = 46,031.76

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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.