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Finding the Fourth Proportional to 73,431.90, 110,147.85 and 47,187.90

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Solution

The fourth proportional to 73,431.90, 110,147.85 and 47,187.90 is: 70,781.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,431.90 : 110,147.85 = 47,187.90 : x
  2. Step 2: Convert to fraction form
    73,431.90/110,147.85 = 47,187.90/x
  3. Step 3: Cross multiply
    73,431.90x = 110,147.85 × 47,187.90
  4. Step 4: Simplify right side
    73,431.90x = 5,197,645,731.02
  5. Step 5: Solve for x
    x = 5,197,645,731.02/73,431.90
  6. Step 6: Final answer
    x = 70,781.85

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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.