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Finding the Fourth Proportional to 64,998.68, 89,671.44 and 43,784.78

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Solution

The fourth proportional to 64,998.68, 89,671.44 and 43,784.78 is: 60,404.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,998.68 : 89,671.44 = 43,784.78 : x
  2. Step 2: Convert to fraction form
    64,998.68/89,671.44 = 43,784.78/x
  3. Step 3: Cross multiply
    64,998.68x = 89,671.44 × 43,784.78
  4. Step 4: Simplify right side
    64,998.68x = 3,926,244,272.68
  5. Step 5: Solve for x
    x = 3,926,244,272.68/64,998.68
  6. Step 6: Final answer
    x = 60,404.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.