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Finding the Fourth Proportional to 71,764.01, 107,547.60 and 45,421.73

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Solution

The fourth proportional to 71,764.01, 107,547.60 and 45,421.73 is: 68,070.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,764.01 : 107,547.60 = 45,421.73 : x
  2. Step 2: Convert to fraction form
    71,764.01/107,547.60 = 45,421.73/x
  3. Step 3: Cross multiply
    71,764.01x = 107,547.60 × 45,421.73
  4. Step 4: Simplify right side
    71,764.01x = 4,884,998,049.35
  5. Step 5: Solve for x
    x = 4,884,998,049.35/71,764.01
  6. Step 6: Final answer
    x = 68,070.31

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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.