Home / 75,285.28-112,940.20-30,900.12

Finding the Fourth Proportional to 75,285.28, 112,940.20 and 30,900.12

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Solution

The fourth proportional to 75,285.28, 112,940.20 and 30,900.12 is: 46,355.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,285.28 : 112,940.20 = 30,900.12 : x
  2. Step 2: Convert to fraction form
    75,285.28/112,940.20 = 30,900.12/x
  3. Step 3: Cross multiply
    75,285.28x = 112,940.20 × 30,900.12
  4. Step 4: Simplify right side
    75,285.28x = 3,489,865,732.82
  5. Step 5: Solve for x
    x = 3,489,865,732.82/75,285.28
  6. Step 6: Final answer
    x = 46,355.22

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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.