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Finding the Fourth Proportional to 30,478.62, 45,730.08 and 10,759.17

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Solution

The fourth proportional to 30,478.62, 45,730.08 and 10,759.17 is: 16,143.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,478.62 : 45,730.08 = 10,759.17 : x
  2. Step 2: Convert to fraction form
    30,478.62/45,730.08 = 10,759.17/x
  3. Step 3: Cross multiply
    30,478.62x = 45,730.08 × 10,759.17
  4. Step 4: Simplify right side
    30,478.62x = 492,017,704.83
  5. Step 5: Solve for x
    x = 492,017,704.83/30,478.62
  6. Step 6: Final answer
    x = 16,143.04

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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.