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Finding the Fourth Proportional to 70,376.88, 97,115.04 and 38,540.64

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Solution

The fourth proportional to 70,376.88, 97,115.04 and 38,540.64 is: 53,183.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,376.88 : 97,115.04 = 38,540.64 : x
  2. Step 2: Convert to fraction form
    70,376.88/97,115.04 = 38,540.64/x
  3. Step 3: Cross multiply
    70,376.88x = 97,115.04 × 38,540.64
  4. Step 4: Simplify right side
    70,376.88x = 3,742,875,795.23
  5. Step 5: Solve for x
    x = 3,742,875,795.23/70,376.88
  6. Step 6: Final answer
    x = 53,183.32

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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.