Home / 72,280.92-108,441-30,147.06

Finding the Fourth Proportional to 72,280.92, 108,441 and 30,147.06

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Solution

The fourth proportional to 72,280.92, 108,441 and 30,147.06 is: 45,228.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,280.92 : 108,441 = 30,147.06 : x
  2. Step 2: Convert to fraction form
    72,280.92/108,441 = 30,147.06/x
  3. Step 3: Cross multiply
    72,280.92x = 108,441 × 30,147.06
  4. Step 4: Simplify right side
    72,280.92x = 3,269,177,333.46
  5. Step 5: Solve for x
    x = 3,269,177,333.46/72,280.92
  6. Step 6: Final answer
    x = 45,228.77

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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.