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Finding the Fourth Proportional to 64,610.03, 89,161.80 and 36,315.71

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Solution

The fourth proportional to 64,610.03, 89,161.80 and 36,315.71 is: 50,115.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,610.03 : 89,161.80 = 36,315.71 : x
  2. Step 2: Convert to fraction form
    64,610.03/89,161.80 = 36,315.71/x
  3. Step 3: Cross multiply
    64,610.03x = 89,161.80 × 36,315.71
  4. Step 4: Simplify right side
    64,610.03x = 3,237,973,626.07
  5. Step 5: Solve for x
    x = 3,237,973,626.07/64,610.03
  6. Step 6: Final answer
    x = 50,115.65

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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.