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Finding the Fourth Proportional to 64,997.99, 89,697.83 and 38,140.95

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Solution

The fourth proportional to 64,997.99, 89,697.83 and 38,140.95 is: 52,634.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,997.99 : 89,697.83 = 38,140.95 : x
  2. Step 2: Convert to fraction form
    64,997.99/89,697.83 = 38,140.95/x
  3. Step 3: Cross multiply
    64,997.99x = 89,697.83 × 38,140.95
  4. Step 4: Simplify right side
    64,997.99x = 3,421,160,090.25
  5. Step 5: Solve for x
    x = 3,421,160,090.25/64,997.99
  6. Step 6: Final answer
    x = 52,634.86

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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.