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Finding the Fourth Proportional to 71,041.36, 98,034.12 and 39,209.80

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Solution

The fourth proportional to 71,041.36, 98,034.12 and 39,209.80 is: 54,107.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,041.36 : 98,034.12 = 39,209.80 : x
  2. Step 2: Convert to fraction form
    71,041.36/98,034.12 = 39,209.80/x
  3. Step 3: Cross multiply
    71,041.36x = 98,034.12 × 39,209.80
  4. Step 4: Simplify right side
    71,041.36x = 3,843,898,238.38
  5. Step 5: Solve for x
    x = 3,843,898,238.38/71,041.36
  6. Step 6: Final answer
    x = 54,107.89

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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.