Home / 47,425.60-71,138.40-45,121.60

Finding the Fourth Proportional to 47,425.60, 71,138.40 and 45,121.60

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Solution

The fourth proportional to 47,425.60, 71,138.40 and 45,121.60 is: 67,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,425.60 : 71,138.40 = 45,121.60 : x
  2. Step 2: Convert to fraction form
    47,425.60/71,138.40 = 45,121.60/x
  3. Step 3: Cross multiply
    47,425.60x = 71,138.40 × 45,121.60
  4. Step 4: Simplify right side
    47,425.60x = 3,209,878,429.44
  5. Step 5: Solve for x
    x = 3,209,878,429.44/47,425.60
  6. Step 6: Final answer
    x = 67,682.40

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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.