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Finding the Fourth Proportional to 64,303.25, 96,419.63 and 19,917.68

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Solution

The fourth proportional to 64,303.25, 96,419.63 and 19,917.68 is: 29,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,303.25 : 96,419.63 = 19,917.68 : x
  2. Step 2: Convert to fraction form
    64,303.25/96,419.63 = 19,917.68/x
  3. Step 3: Cross multiply
    64,303.25x = 96,419.63 × 19,917.68
  4. Step 4: Simplify right side
    64,303.25x = 1,920,454,903.75
  5. Step 5: Solve for x
    x = 1,920,454,903.75/64,303.25
  6. Step 6: Final answer
    x = 29,865.60

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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.