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Finding the Fourth Proportional to 70,808.44, 97,714.84 and 38,976.64

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Solution

The fourth proportional to 70,808.44, 97,714.84 and 38,976.64 is: 53,787.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,808.44 : 97,714.84 = 38,976.64 : x
  2. Step 2: Convert to fraction form
    70,808.44/97,714.84 = 38,976.64/x
  3. Step 3: Cross multiply
    70,808.44x = 97,714.84 × 38,976.64
  4. Step 4: Simplify right side
    70,808.44x = 3,808,596,141.34
  5. Step 5: Solve for x
    x = 3,808,596,141.34/70,808.44
  6. Step 6: Final answer
    x = 53,787.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.