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Finding the Fourth Proportional to 71,171.76, 98,216.52 and 39,340.08

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Solution

The fourth proportional to 71,171.76, 98,216.52 and 39,340.08 is: 54,289.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,171.76 : 98,216.52 = 39,340.08 : x
  2. Step 2: Convert to fraction form
    71,171.76/98,216.52 = 39,340.08/x
  3. Step 3: Cross multiply
    71,171.76x = 98,216.52 × 39,340.08
  4. Step 4: Simplify right side
    71,171.76x = 3,863,845,754.12
  5. Step 5: Solve for x
    x = 3,863,845,754.12/71,171.76
  6. Step 6: Final answer
    x = 54,289.03

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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.