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Finding the Fourth Proportional to 64,265.80, 96,362.94 and 19,880.20

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Solution

The fourth proportional to 64,265.80, 96,362.94 and 19,880.20 is: 29,809.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,265.80 : 96,362.94 = 19,880.20 : x
  2. Step 2: Convert to fraction form
    64,265.80/96,362.94 = 19,880.20/x
  3. Step 3: Cross multiply
    64,265.80x = 96,362.94 × 19,880.20
  4. Step 4: Simplify right side
    64,265.80x = 1,915,714,519.79
  5. Step 5: Solve for x
    x = 1,915,714,519.79/64,265.80
  6. Step 6: Final answer
    x = 29,809.24

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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.