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Finding the Fourth Proportional to 74,919.74, 112,353.28 and 21,597.49

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Solution

The fourth proportional to 74,919.74, 112,353.28 and 21,597.49 is: 32,388.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,919.74 : 112,353.28 = 21,597.49 : x
  2. Step 2: Convert to fraction form
    74,919.74/112,353.28 = 21,597.49/x
  3. Step 3: Cross multiply
    74,919.74x = 112,353.28 × 21,597.49
  4. Step 4: Simplify right side
    74,919.74x = 2,426,548,295.73
  5. Step 5: Solve for x
    x = 2,426,548,295.73/74,919.74
  6. Step 6: Final answer
    x = 32,388.64

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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.