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Finding the Fourth Proportional to 64,579.66, 89,119.84 and 35,898.43

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Solution

The fourth proportional to 64,579.66, 89,119.84 and 35,898.43 is: 49,539.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,579.66 : 89,119.84 = 35,898.43 : x
  2. Step 2: Convert to fraction form
    64,579.66/89,119.84 = 35,898.43/x
  3. Step 3: Cross multiply
    64,579.66x = 89,119.84 × 35,898.43
  4. Step 4: Simplify right side
    64,579.66x = 3,199,262,337.85
  5. Step 5: Solve for x
    x = 3,199,262,337.85/64,579.66
  6. Step 6: Final answer
    x = 49,539.78

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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.