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Finding the Fourth Proportional to 64,182.80, 96,276.40 and 19,809.20

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Solution

The fourth proportional to 64,182.80, 96,276.40 and 19,809.20 is: 29,714.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,182.80 : 96,276.40 = 19,809.20 : x
  2. Step 2: Convert to fraction form
    64,182.80/96,276.40 = 19,809.20/x
  3. Step 3: Cross multiply
    64,182.80x = 96,276.40 × 19,809.20
  4. Step 4: Simplify right side
    64,182.80x = 1,907,158,462.88
  5. Step 5: Solve for x
    x = 1,907,158,462.88/64,182.80
  6. Step 6: Final answer
    x = 29,714.48

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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.