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Finding the Fourth Proportional to 30,573.88, 45,783.06 and 28,007.80

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Solution

The fourth proportional to 30,573.88, 45,783.06 and 28,007.80 is: 41,940.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,573.88 : 45,783.06 = 28,007.80 : x
  2. Step 2: Convert to fraction form
    30,573.88/45,783.06 = 28,007.80/x
  3. Step 3: Cross multiply
    30,573.88x = 45,783.06 × 28,007.80
  4. Step 4: Simplify right side
    30,573.88x = 1,282,282,787.87
  5. Step 5: Solve for x
    x = 1,282,282,787.87/30,573.88
  6. Step 6: Final answer
    x = 41,940.47

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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.