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Finding the Fourth Proportional to 64,786.03, 89,374.16 and 37,911.90

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Solution

The fourth proportional to 64,786.03, 89,374.16 and 37,911.90 is: 52,300.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,786.03 : 89,374.16 = 37,911.90 : x
  2. Step 2: Convert to fraction form
    64,786.03/89,374.16 = 37,911.90/x
  3. Step 3: Cross multiply
    64,786.03x = 89,374.16 × 37,911.90
  4. Step 4: Simplify right side
    64,786.03x = 3,388,344,216.50
  5. Step 5: Solve for x
    x = 3,388,344,216.50/64,786.03
  6. Step 6: Final answer
    x = 52,300.54

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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.