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Finding the Fourth Proportional to 71,188.84, 98,231.94 and 39,353.32

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Solution

The fourth proportional to 71,188.84, 98,231.94 and 39,353.32 is: 54,302.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,188.84 : 98,231.94 = 39,353.32 : x
  2. Step 2: Convert to fraction form
    71,188.84/98,231.94 = 39,353.32/x
  3. Step 3: Cross multiply
    71,188.84x = 98,231.94 × 39,353.32
  4. Step 4: Simplify right side
    71,188.84x = 3,865,752,969.04
  5. Step 5: Solve for x
    x = 3,865,752,969.04/71,188.84
  6. Step 6: Final answer
    x = 54,302.79

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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.