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Finding the Fourth Proportional to 47,812.80, 71,694.90 and 28,097.40

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Solution

The fourth proportional to 47,812.80, 71,694.90 and 28,097.40 is: 42,131.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,812.80 : 71,694.90 = 28,097.40 : x
  2. Step 2: Convert to fraction form
    47,812.80/71,694.90 = 28,097.40/x
  3. Step 3: Cross multiply
    47,812.80x = 71,694.90 × 28,097.40
  4. Step 4: Simplify right side
    47,812.80x = 2,014,440,283.26
  5. Step 5: Solve for x
    x = 2,014,440,283.26/47,812.80
  6. Step 6: Final answer
    x = 42,131.82

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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.