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Finding the Fourth Proportional to 64,264.80, 96,361.44 and 19,879.20

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Solution

The fourth proportional to 64,264.80, 96,361.44 and 19,879.20 is: 29,807.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,264.80 : 96,361.44 = 19,879.20 : x
  2. Step 2: Convert to fraction form
    64,264.80/96,361.44 = 19,879.20/x
  3. Step 3: Cross multiply
    64,264.80x = 96,361.44 × 19,879.20
  4. Step 4: Simplify right side
    64,264.80x = 1,915,588,338.05
  5. Step 5: Solve for x
    x = 1,915,588,338.05/64,264.80
  6. Step 6: Final answer
    x = 29,807.74

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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.