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Finding the Fourth Proportional to 71,675.82, 107,478.90 and 21,746.88

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Solution

The fourth proportional to 71,675.82, 107,478.90 and 21,746.88 is: 32,609.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,675.82 : 107,478.90 = 21,746.88 : x
  2. Step 2: Convert to fraction form
    71,675.82/107,478.90 = 21,746.88/x
  3. Step 3: Cross multiply
    71,675.82x = 107,478.90 × 21,746.88
  4. Step 4: Simplify right side
    71,675.82x = 2,337,330,740.83
  5. Step 5: Solve for x
    x = 2,337,330,740.83/71,675.82
  6. Step 6: Final answer
    x = 32,609.75

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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.