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Finding the Fourth Proportional to 47,608.40, 71,412.60 and 12,551.60

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Solution

The fourth proportional to 47,608.40, 71,412.60 and 12,551.60 is: 18,827.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,608.40 : 71,412.60 = 12,551.60 : x
  2. Step 2: Convert to fraction form
    47,608.40/71,412.60 = 12,551.60/x
  3. Step 3: Cross multiply
    47,608.40x = 71,412.60 × 12,551.60
  4. Step 4: Simplify right side
    47,608.40x = 896,342,390.16
  5. Step 5: Solve for x
    x = 896,342,390.16/47,608.40
  6. Step 6: Final answer
    x = 18,827.40

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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.