Home / 71,000.20-97,980.60-39,169.10

Finding the Fourth Proportional to 71,000.20, 97,980.60 and 39,169.10

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Solution

The fourth proportional to 71,000.20, 97,980.60 and 39,169.10 is: 54,053.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,000.20 : 97,980.60 = 39,169.10 : x
  2. Step 2: Convert to fraction form
    71,000.20/97,980.60 = 39,169.10/x
  3. Step 3: Cross multiply
    71,000.20x = 97,980.60 × 39,169.10
  4. Step 4: Simplify right side
    71,000.20x = 3,837,811,919.46
  5. Step 5: Solve for x
    x = 3,837,811,919.46/71,000.20
  6. Step 6: Final answer
    x = 54,053.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.