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Finding the Fourth Proportional to 73,650, 110,479.80 and 21,063.76

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Solution

The fourth proportional to 73,650, 110,479.80 and 21,063.76 is: 31,597.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,650 : 110,479.80 = 21,063.76 : x
  2. Step 2: Convert to fraction form
    73,650/110,479.80 = 21,063.76/x
  3. Step 3: Cross multiply
    73,650x = 110,479.80 × 21,063.76
  4. Step 4: Simplify right side
    73,650x = 2,327,119,992.05
  5. Step 5: Solve for x
    x = 2,327,119,992.05/73,650
  6. Step 6: Final answer
    x = 31,597.01

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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.