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Finding the Fourth Proportional to 30,863.70, 46,295.55 and 10,087.20

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Solution

The fourth proportional to 30,863.70, 46,295.55 and 10,087.20 is: 15,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,863.70 : 46,295.55 = 10,087.20 : x
  2. Step 2: Convert to fraction form
    30,863.70/46,295.55 = 10,087.20/x
  3. Step 3: Cross multiply
    30,863.70x = 46,295.55 × 10,087.20
  4. Step 4: Simplify right side
    30,863.70x = 466,992,471.96
  5. Step 5: Solve for x
    x = 466,992,471.96/30,863.70
  6. Step 6: Final answer
    x = 15,130.80

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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.