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Finding the Fourth Proportional to 71,175.75, 98,214.03 and 39,340.32

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Solution

The fourth proportional to 71,175.75, 98,214.03 and 39,340.32 is: 54,284.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,175.75 : 98,214.03 = 39,340.32 : x
  2. Step 2: Convert to fraction form
    71,175.75/98,214.03 = 39,340.32/x
  3. Step 3: Cross multiply
    71,175.75x = 98,214.03 × 39,340.32
  4. Step 4: Simplify right side
    71,175.75x = 3,863,771,368.69
  5. Step 5: Solve for x
    x = 3,863,771,368.69/71,175.75
  6. Step 6: Final answer
    x = 54,284.94

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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.