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Finding the Fourth Proportional to 64,881.30, 89,536.05 and 36,586.79

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Solution

The fourth proportional to 64,881.30, 89,536.05 and 36,586.79 is: 50,489.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,881.30 : 89,536.05 = 36,586.79 : x
  2. Step 2: Convert to fraction form
    64,881.30/89,536.05 = 36,586.79/x
  3. Step 3: Cross multiply
    64,881.30x = 89,536.05 × 36,586.79
  4. Step 4: Simplify right side
    64,881.30x = 3,275,836,658.78
  5. Step 5: Solve for x
    x = 3,275,836,658.78/64,881.30
  6. Step 6: Final answer
    x = 50,489.69

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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.