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Finding the Fourth Proportional to 64,400.13, 96,601.01 and 20,025.90

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Solution

The fourth proportional to 64,400.13, 96,601.01 and 20,025.90 is: 30,039.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,400.13 : 96,601.01 = 20,025.90 : x
  2. Step 2: Convert to fraction form
    64,400.13/96,601.01 = 20,025.90/x
  3. Step 3: Cross multiply
    64,400.13x = 96,601.01 × 20,025.90
  4. Step 4: Simplify right side
    64,400.13x = 1,934,522,066.03
  5. Step 5: Solve for x
    x = 1,934,522,066.03/64,400.13
  6. Step 6: Final answer
    x = 30,039.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.