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Finding the Fourth Proportional to 71,441.76, 107,166.68 and 21,528.75

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Solution

The fourth proportional to 71,441.76, 107,166.68 and 21,528.75 is: 32,294.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,441.76 : 107,166.68 = 21,528.75 : x
  2. Step 2: Convert to fraction form
    71,441.76/107,166.68 = 21,528.75/x
  3. Step 3: Cross multiply
    71,441.76x = 107,166.68 × 21,528.75
  4. Step 4: Simplify right side
    71,441.76x = 2,307,164,180.04
  5. Step 5: Solve for x
    x = 2,307,164,180.04/71,441.76
  6. Step 6: Final answer
    x = 32,294.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.